640552

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 1360800

約数和(自身を除く): 720248

約数列:

[1, 2, 4, 8, 11, 22, 29, 44, 58, 88, 116, 232, 251, 319, 502, 638, 1004, 1276, 2008, 2552, 2761, 5522, 7279, 11044, 14558, 22088, 29116, 58232, 80069, 160138, 320276, 640552]

約数ペア:

[(1, 640552), (2, 320276), (4, 160138), (8, 80069), (11, 58232), (22, 29116), (29, 22088), (44, 14558), (58, 11044), (88, 7279), (116, 5522), (232, 2761), (251, 2552), (319, 2008), (502, 1276), (638, 1004)]