127996640

素因数分解:

$2^5\times 5^1\times {\mathrm{799979}}^1$

素因数の和:799994

約数の個数: 24

約数和(自身を含む): 302392440

約数和(自身を除く): 174395800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 799979, 1599958, 3199916, 3999895, 6399832, 7999790, 12799664, 15999580, 25599328, 31999160, 63998320, 127996640]

約数ペア:

[(1, 127996640), (2, 63998320), (4, 31999160), (5, 25599328), (8, 15999580), (10, 12799664), (16, 7999790), (20, 6399832), (32, 3999895), (40, 3199916), (80, 1599958), (160, 799979)]