21411649

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1\times {\mathrm{431}}^1$

素因数の和:636

約数の個数: 16

約数和(自身を含む): 25214976

約数和(自身を除く): 3803327

約数列:

[1, 7, 47, 151, 329, 431, 1057, 3017, 7097, 20257, 49679, 65081, 141799, 455567, 3058807, 21411649]

約数ペア:

[(1, 21411649), (7, 3058807), (47, 455567), (151, 141799), (329, 65081), (431, 49679), (1057, 20257), (3017, 7097)]