20851580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{35951}}^1$

素因数の和:35989

約数の個数: 24

約数和(自身を含む): 45299520

約数和(自身を除く): 24447940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 35951, 71902, 143804, 179755, 359510, 719020, 1042579, 2085158, 4170316, 5212895, 10425790, 20851580]

約数ペア:

[(1, 20851580), (2, 10425790), (4, 5212895), (5, 4170316), (10, 2085158), (20, 1042579), (29, 719020), (58, 359510), (116, 179755), (145, 143804), (290, 71902), (580, 35951)]