28258780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128449}}^1$

素因数の和:128469

約数の個数: 24

約数和(自身を含む): 64738800

約数和(自身を除く): 36480020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 128449, 256898, 513796, 642245, 1284490, 1412939, 2568980, 2825878, 5651756, 7064695, 14129390, 28258780]

約数ペア:

[(1, 28258780), (2, 14129390), (4, 7064695), (5, 5651756), (10, 2825878), (11, 2568980), (20, 1412939), (22, 1284490), (44, 642245), (55, 513796), (110, 256898), (220, 128449)]