664261731

素因数分解:

$3^2\times 7^1\times {\mathrm{2371}}^1\times {\mathrm{4447}}^1$

素因数の和:6831

約数の個数: 24

約数和(自身を含む): 1097268224

約数和(自身を除く): 433006493

約数列:

[1, 3, 7, 9, 21, 63, 2371, 4447, 7113, 13341, 16597, 21339, 31129, 40023, 49791, 93387, 149373, 280161, 10543837, 31631511, 73806859, 94894533, 221420577, 664261731]

約数ペア:

[(1, 664261731), (3, 221420577), (7, 94894533), (9, 73806859), (21, 31631511), (63, 10543837), (2371, 280161), (4447, 149373), (7113, 93387), (13341, 49791), (16597, 40023), (21339, 31129)]