21202573

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{1667}}^1$

素因数の和:1776

約数の個数: 16

約数和(自身を含む): 25620480

約数和(自身を除く): 4417907

約数列:

[1, 7, 23, 79, 161, 553, 1667, 1817, 11669, 12719, 38341, 131693, 268387, 921851, 3028939, 21202573]

約数ペア:

[(1, 21202573), (7, 3028939), (23, 921851), (79, 268387), (161, 131693), (553, 38341), (1667, 12719), (1817, 11669)]