20907100

素因数分解:

$2^2\times 5^2\times {\mathrm{209071}}^1$

素因数の和:209085

約数の個数: 18

約数和(自身を含む): 45368624

約数和(自身を除く): 24461524

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 209071, 418142, 836284, 1045355, 2090710, 4181420, 5226775, 10453550, 20907100]

約数ペア:

[(1, 20907100), (2, 10453550), (4, 5226775), (5, 4181420), (10, 2090710), (20, 1045355), (25, 836284), (50, 418142), (100, 209071)]