20457020

素因数分解:

$2^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{1621}}^1$

素因数の和:2261

約数の個数: 24

約数和(自身を含む): 43054368

約数和(自身を除く): 22597348

約数列:

[1, 2, 4, 5, 10, 20, 631, 1262, 1621, 2524, 3155, 3242, 6310, 6484, 8105, 12620, 16210, 32420, 1022851, 2045702, 4091404, 5114255, 10228510, 20457020]

約数ペア:

[(1, 20457020), (2, 10228510), (4, 5114255), (5, 4091404), (10, 2045702), (20, 1022851), (631, 32420), (1262, 16210), (1621, 12620), (2524, 8105), (3155, 6484), (3242, 6310)]