289128220

素因数分解:

$2^2\times 5^1\times {\mathrm{691}}^1\times {\mathrm{20921}}^1$

素因数の和:21621

約数の個数: 24

約数和(自身を含む): 608077008

約数和(自身を除く): 318948788

約数列:

[1, 2, 4, 5, 10, 20, 691, 1382, 2764, 3455, 6910, 13820, 20921, 41842, 83684, 104605, 209210, 418420, 14456411, 28912822, 57825644, 72282055, 144564110, 289128220]

約数ペア:

[(1, 289128220), (2, 144564110), (4, 72282055), (5, 57825644), (10, 28912822), (20, 14456411), (691, 418420), (1382, 209210), (2764, 104605), (3455, 83684), (6910, 41842), (13820, 20921)]