21475240

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{11423}}^1$

素因数の和:11481

約数の個数: 32

約数和(自身を含む): 49351680

約数和(自身を除く): 27876440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 11423, 22846, 45692, 57115, 91384, 114230, 228460, 456920, 536881, 1073762, 2147524, 2684405, 4295048, 5368810, 10737620, 21475240]

約数ペア:

[(1, 21475240), (2, 10737620), (4, 5368810), (5, 4295048), (8, 2684405), (10, 2147524), (20, 1073762), (40, 536881), (47, 456920), (94, 228460), (188, 114230), (235, 91384), (376, 57115), (470, 45692), (940, 22846), (1880, 11423)]