404750260

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1\times {\mathrm{1009}}^1$

素因数の和:1696

約数の個数: 48

約数和(自身を含む): 879621120

約数和(自身を除く): 474870860

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 647, 1009, 1294, 2018, 2588, 3235, 4036, 5045, 6470, 10090, 12940, 20057, 20180, 31279, 40114, 62558, 80228, 100285, 125116, 156395, 200570, 312790, 401140, 625580, 652823, 1305646, 2611292, 3264115, 6528230, 13056460, 20237513, 40475026, 80950052, 101187565, 202375130, 404750260]

約数ペア:

[(1, 404750260), (2, 202375130), (4, 101187565), (5, 80950052), (10, 40475026), (20, 20237513), (31, 13056460), (62, 6528230), (124, 3264115), (155, 2611292), (310, 1305646), (620, 652823), (647, 625580), (1009, 401140), (1294, 312790), (2018, 200570), (2588, 156395), (3235, 125116), (4036, 100285), (5045, 80228), (6470, 62558), (10090, 40114), (12940, 31279), (20057, 20180)]