18788978

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{42509}}^1$

素因数の和:42541

約数の個数: 16

約数和(自身を含む): 32137560

約数和(自身を除く): 13348582

約数列:

[1, 2, 13, 17, 26, 34, 221, 442, 42509, 85018, 552617, 722653, 1105234, 1445306, 9394489, 18788978]

約数ペア:

[(1, 18788978), (2, 9394489), (13, 1445306), (17, 1105234), (26, 722653), (34, 552617), (221, 85018), (442, 42509)]