20161208540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{365107}}^1$

素因数の和:365378

約数の個数: 48

約数和(自身を含む): 46371636864

約数和(自身を除く): 26210428324

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 251, 502, 1004, 1255, 2510, 2761, 5020, 5522, 11044, 13805, 27610, 55220, 365107, 730214, 1460428, 1825535, 3651070, 4016177, 7302140, 8032354, 16064708, 20080885, 40161770, 80323540, 91641857, 183283714, 366567428, 458209285, 916418570, 1008060427, 1832837140, 2016120854, 4032241708, 5040302135, 10080604270, 20161208540]

約数ペア:

[(1, 20161208540), (2, 10080604270), (4, 5040302135), (5, 4032241708), (10, 2016120854), (11, 1832837140), (20, 1008060427), (22, 916418570), (44, 458209285), (55, 366567428), (110, 183283714), (220, 91641857), (251, 80323540), (502, 40161770), (1004, 20080885), (1255, 16064708), (2510, 8032354), (2761, 7302140), (5020, 4016177), (5522, 3651070), (11044, 1825535), (13805, 1460428), (27610, 730214), (55220, 365107)]