65316640

素因数分解:

$2^5\times 5^1\times {\mathrm{408229}}^1$

素因数の和:408244

約数の個数: 24

約数和(自身を含む): 154310940

約数和(自身を除く): 88994300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 408229, 816458, 1632916, 2041145, 3265832, 4082290, 6531664, 8164580, 13063328, 16329160, 32658320, 65316640]

約数ペア:

[(1, 65316640), (2, 32658320), (4, 16329160), (5, 13063328), (8, 8164580), (10, 6531664), (16, 4082290), (20, 3265832), (32, 2041145), (40, 1632916), (80, 816458), (160, 408229)]