28520420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{34781}}^1$

素因数の和:34831

約数の個数: 24

約数和(自身を含む): 61355448

約数和(自身を除く): 32835028

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 34781, 69562, 139124, 173905, 347810, 695620, 1426021, 2852042, 5704084, 7130105, 14260210, 28520420]

約数ペア:

[(1, 28520420), (2, 14260210), (4, 7130105), (5, 5704084), (10, 2852042), (20, 1426021), (41, 695620), (82, 347810), (164, 173905), (205, 139124), (410, 69562), (820, 34781)]