By dividing your number by prime numbers until all the factors are prime. 210 105,2 35,3,2 7,5,3,2
2*2*5*5
99 = 32 x 11
2 x 3 x 5
sum of prime factors of 245 = 12factors of 245: 1, 5, 7, 35, 49, 245.prime factors of 245: 5 & 7sum of prime factors of 245: 5 + 7 = 12
245 = 5*7*7 or 5*72
5 x 7 x 7 = 245
245 = 5*7*7 or 5*72
By dividing your number by prime numbers until all the factors are prime. 210 105,2 35,3,2 7,5,3,2
23x19
245 = 5 × 72
13,2,4,7,3,1,8,358,24,27,792,45,89,32 and 97.
152 = 2x2x2x19.2,2,2,19
The answer is 2x5x2 3
2*5*19
1, 2 and 13
3*3*7