640991676

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{216259}}^1$

素因数の和:216298

約数の個数: 48

約数和(自身を含む): 1695478400

約数和(自身を除く): 1054486724

約数列:

[1, 2, 3, 4, 6, 12, 13, 19, 26, 38, 39, 52, 57, 76, 78, 114, 156, 228, 247, 494, 741, 988, 1482, 2964, 216259, 432518, 648777, 865036, 1297554, 2595108, 2811367, 4108921, 5622734, 8217842, 8434101, 11245468, 12326763, 16435684, 16868202, 24653526, 33736404, 49307052, 53415973, 106831946, 160247919, 213663892, 320495838, 640991676]

約数ペア:

[(1, 640991676), (2, 320495838), (3, 213663892), (4, 160247919), (6, 106831946), (12, 53415973), (13, 49307052), (19, 33736404), (26, 24653526), (38, 16868202), (39, 16435684), (52, 12326763), (57, 11245468), (76, 8434101), (78, 8217842), (114, 5622734), (156, 4108921), (228, 2811367), (247, 2595108), (494, 1297554), (741, 865036), (988, 648777), (1482, 432518), (2964, 216259)]