20830120

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{17957}}^1$

素因数の和:17997

約数の個数: 32

約数和(自身を含む): 48486600

約数和(自身を除く): 27656480

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 17957, 35914, 71828, 89785, 143656, 179570, 359140, 520753, 718280, 1041506, 2083012, 2603765, 4166024, 5207530, 10415060, 20830120]

約数ペア:

[(1, 20830120), (2, 10415060), (4, 5207530), (5, 4166024), (8, 2603765), (10, 2083012), (20, 1041506), (29, 718280), (40, 520753), (58, 359140), (116, 179570), (145, 143656), (232, 89785), (290, 71828), (580, 35914), (1160, 17957)]