21394550

素因数分解:

$2^1\times 5^2\times {\mathrm{379}}^1\times {\mathrm{1129}}^1$

素因数の和:1520

約数の個数: 24

約数和(自身を含む): 39934200

約数和(自身を除く): 18539650

約数列:

[1, 2, 5, 10, 25, 50, 379, 758, 1129, 1895, 2258, 3790, 5645, 9475, 11290, 18950, 28225, 56450, 427891, 855782, 2139455, 4278910, 10697275, 21394550]

約数ペア:

[(1, 21394550), (2, 10697275), (5, 4278910), (10, 2139455), (25, 855782), (50, 427891), (379, 56450), (758, 28225), (1129, 18950), (1895, 11290), (2258, 9475), (3790, 5645)]