21326279

素因数分解:

${\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{571}}^1$

素因数の和:627

約数の個数: 16

約数和(自身を含む): 24504480

約数和(自身を除く): 3178201

約数列:

[1, 13, 17, 169, 221, 571, 2197, 2873, 7423, 9707, 37349, 96499, 126191, 1254487, 1640483, 21326279]

約数ペア:

[(1, 21326279), (13, 1640483), (17, 1254487), (169, 126191), (221, 96499), (571, 37349), (2197, 9707), (2873, 7423)]