21575690

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{881}}^1$

素因数の和:998

約数の個数: 32

約数和(自身を含む): 40642560

約数和(自身を除く): 19066870

約数列:

[1, 2, 5, 10, 31, 62, 79, 155, 158, 310, 395, 790, 881, 1762, 2449, 4405, 4898, 8810, 12245, 24490, 27311, 54622, 69599, 136555, 139198, 273110, 347995, 695990, 2157569, 4315138, 10787845, 21575690]

約数ペア:

[(1, 21575690), (2, 10787845), (5, 4315138), (10, 2157569), (31, 695990), (62, 347995), (79, 273110), (155, 139198), (158, 136555), (310, 69599), (395, 54622), (790, 27311), (881, 24490), (1762, 12245), (2449, 8810), (4405, 4898)]