21950680

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1$

素因数の和:316

約数の個数: 64

約数和(自身を含む): 51840000

約数和(自身を除く): 29889320

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 127, 145, 149, 232, 254, 290, 298, 508, 580, 596, 635, 745, 1016, 1160, 1192, 1270, 1490, 2540, 2980, 3683, 4321, 5080, 5960, 7366, 8642, 14732, 17284, 18415, 18923, 21605, 29464, 34568, 36830, 37846, 43210, 73660, 75692, 86420, 94615, 147320, 151384, 172840, 189230, 378460, 548767, 756920, 1097534, 2195068, 2743835, 4390136, 5487670, 10975340, 21950680]

約数ペア:

[(1, 21950680), (2, 10975340), (4, 5487670), (5, 4390136), (8, 2743835), (10, 2195068), (20, 1097534), (29, 756920), (40, 548767), (58, 378460), (116, 189230), (127, 172840), (145, 151384), (149, 147320), (232, 94615), (254, 86420), (290, 75692), (298, 73660), (508, 43210), (580, 37846), (596, 36830), (635, 34568), (745, 29464), (1016, 21605), (1160, 18923), (1192, 18415), (1270, 17284), (1490, 14732), (2540, 8642), (2980, 7366), (3683, 5960), (4321, 5080)]