80723740

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{521}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 173988864

約数和(自身を除く): 93265124

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 127, 244, 254, 305, 508, 521, 610, 635, 1042, 1220, 1270, 2084, 2540, 2605, 5210, 7747, 10420, 15494, 30988, 31781, 38735, 63562, 66167, 77470, 127124, 132334, 154940, 158905, 264668, 317810, 330835, 635620, 661670, 1323340, 4036187, 8072374, 16144748, 20180935, 40361870, 80723740]

約数ペア:

[(1, 80723740), (2, 40361870), (4, 20180935), (5, 16144748), (10, 8072374), (20, 4036187), (61, 1323340), (122, 661670), (127, 635620), (244, 330835), (254, 317810), (305, 264668), (508, 158905), (521, 154940), (610, 132334), (635, 127124), (1042, 77470), (1220, 66167), (1270, 63562), (2084, 38735), (2540, 31781), (2605, 30988), (5210, 15494), (7747, 10420)]