21035080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47807}}^1$

素因数の和:47829

約数の個数: 32

約数和(自身を含む): 51632640

約数和(自身を除く): 30597560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47807, 95614, 191228, 239035, 382456, 478070, 525877, 956140, 1051754, 1912280, 2103508, 2629385, 4207016, 5258770, 10517540, 21035080]

約数ペア:

[(1, 21035080), (2, 10517540), (4, 5258770), (5, 4207016), (8, 2629385), (10, 2103508), (11, 1912280), (20, 1051754), (22, 956140), (40, 525877), (44, 478070), (55, 382456), (88, 239035), (110, 191228), (220, 95614), (440, 47807)]