20491690

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{3719}}^1$

素因数の和:3774

約数の個数: 32

約数和(自身を含む): 40176000

約数和(自身を除く): 19684310

約数列:

[1, 2, 5, 10, 19, 29, 38, 58, 95, 145, 190, 290, 551, 1102, 2755, 3719, 5510, 7438, 18595, 37190, 70661, 107851, 141322, 215702, 353305, 539255, 706610, 1078510, 2049169, 4098338, 10245845, 20491690]

約数ペア:

[(1, 20491690), (2, 10245845), (5, 4098338), (10, 2049169), (19, 1078510), (29, 706610), (38, 539255), (58, 353305), (95, 215702), (145, 141322), (190, 107851), (290, 70661), (551, 37190), (1102, 18595), (2755, 7438), (3719, 5510)]