402469820

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{123457}}^1$

素因数の和:123629

約数の個数: 24

約数和(自身を含む): 850378704

約数和(自身を除く): 447908884

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 123457, 246914, 493828, 617285, 1234570, 2469140, 20123491, 40246982, 80493964, 100617455, 201234910, 402469820]

約数ペア:

[(1, 402469820), (2, 201234910), (4, 100617455), (5, 80493964), (10, 40246982), (20, 20123491), (163, 2469140), (326, 1234570), (652, 617285), (815, 493828), (1630, 246914), (3260, 123457)]