20397671

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:599

約数の個数: 24

約数和(自身を含む): 25707456

約数和(自身を除く): 5309785

約数列:

[1, 7, 17, 47, 49, 119, 329, 521, 799, 833, 2303, 3647, 5593, 8857, 24487, 25529, 39151, 61999, 171409, 416279, 433993, 1199863, 2913953, 20397671]

約数ペア:

[(1, 20397671), (7, 2913953), (17, 1199863), (47, 433993), (49, 416279), (119, 171409), (329, 61999), (521, 39151), (799, 25529), (833, 24487), (2303, 8857), (3647, 5593)]