21985790

素因数分解:

$2^1\times 5^1\times {\mathrm{379}}^1\times {\mathrm{5801}}^1$

素因数の和:6187

約数の個数: 16

約数和(自身を含む): 39685680

約数和(自身を除く): 17699890

約数列:

[1, 2, 5, 10, 379, 758, 1895, 3790, 5801, 11602, 29005, 58010, 2198579, 4397158, 10992895, 21985790]

約数ペア:

[(1, 21985790), (2, 10992895), (5, 4397158), (10, 2198579), (379, 58010), (758, 29005), (1895, 11602), (3790, 5801)]