201521890

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^2\times {\mathrm{3229}}^1$

素因数の和:3394

約数の個数: 24

約数和(自身を含む): 367502940

約数和(自身を除く): 165981050

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 3229, 6241, 6458, 12482, 16145, 31205, 32290, 62410, 255091, 510182, 1275455, 2550910, 20152189, 40304378, 100760945, 201521890]

約数ペア:

[(1, 201521890), (2, 100760945), (5, 40304378), (10, 20152189), (79, 2550910), (158, 1275455), (395, 510182), (790, 255091), (3229, 62410), (6241, 32290), (6458, 31205), (12482, 16145)]