409416640

素因数分解:

$2^6\times 5^1\times {\mathrm{1279427}}^1$

素因数の和:1279444

約数の個数: 28

約数和(自身を含む): 974924136

約数和(自身を除く): 565507496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 1279427, 2558854, 5117708, 6397135, 10235416, 12794270, 20470832, 25588540, 40941664, 51177080, 81883328, 102354160, 204708320, 409416640]

約数ペア:

[(1, 409416640), (2, 204708320), (4, 102354160), (5, 81883328), (8, 51177080), (10, 40941664), (16, 25588540), (20, 20470832), (32, 12794270), (40, 10235416), (64, 6397135), (80, 5117708), (160, 2558854), (320, 1279427)]