21358790

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73651}}^1$

素因数の和:73687

約数の個数: 16

約数和(自身を含む): 39772080

約数和(自身を除く): 18413290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 73651, 147302, 368255, 736510, 2135879, 4271758, 10679395, 21358790]

約数ペア:

[(1, 21358790), (2, 10679395), (5, 4271758), (10, 2135879), (29, 736510), (58, 368255), (145, 147302), (290, 73651)]