21664409

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{587}}^1$

素因数の和:784

約数の個数: 16

約数和(自身を含む): 24893568

約数和(自身を除く): 3229159

約数列:

[1, 13, 17, 167, 221, 587, 2171, 2839, 7631, 9979, 36907, 98029, 129727, 1274377, 1666493, 21664409]

約数ペア:

[(1, 21664409), (13, 1666493), (17, 1274377), (167, 129727), (221, 98029), (587, 36907), (2171, 9979), (2839, 7631)]