8420620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{233}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 19262880

約数和(自身を除く): 10842260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 233, 260, 278, 466, 556, 695, 932, 1165, 1390, 1807, 2330, 2780, 3029, 3614, 4660, 6058, 7228, 9035, 12116, 15145, 18070, 30290, 32387, 36140, 60580, 64774, 129548, 161935, 323870, 421031, 647740, 842062, 1684124, 2105155, 4210310, 8420620]

約数ペア:

[(1, 8420620), (2, 4210310), (4, 2105155), (5, 1684124), (10, 842062), (13, 647740), (20, 421031), (26, 323870), (52, 161935), (65, 129548), (130, 64774), (139, 60580), (233, 36140), (260, 32387), (278, 30290), (466, 18070), (556, 15145), (695, 12116), (932, 9035), (1165, 7228), (1390, 6058), (1807, 4660), (2330, 3614), (2780, 3029)]