21804839

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{233}}^1\times {\mathrm{461}}^1$

素因数の和:730

約数の個数: 16

約数和(自身を含む): 25945920

約数和(自身を除く): 4141081

約数列:

[1, 7, 29, 203, 233, 461, 1631, 3227, 6757, 13369, 47299, 93583, 107413, 751891, 3114977, 21804839]

約数ペア:

[(1, 21804839), (7, 3114977), (29, 751891), (203, 107413), (233, 93583), (461, 47299), (1631, 13369), (3227, 6757)]