289496440

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{17191}}^1$

素因数の和:17623

約数の個数: 32

約数和(自身を含む): 652952160

約数和(自身を除く): 363455720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 8420, 16840, 17191, 34382, 68764, 85955, 137528, 171910, 343820, 687640, 7237411, 14474822, 28949644, 36187055, 57899288, 72374110, 144748220, 289496440]

約数ペア:

[(1, 289496440), (2, 144748220), (4, 72374110), (5, 57899288), (8, 36187055), (10, 28949644), (20, 14474822), (40, 7237411), (421, 687640), (842, 343820), (1684, 171910), (2105, 137528), (3368, 85955), (4210, 68764), (8420, 34382), (16840, 17191)]