31505540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2017}}^1$

素因数の和:2108

約数の個数: 48

約数和(自身を含む): 73229184

約数和(自身を除く): 41723644

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 2017, 3124, 3905, 4034, 7810, 8068, 10085, 15620, 20170, 22187, 40340, 44374, 88748, 110935, 143207, 221870, 286414, 443740, 572828, 716035, 1432070, 1575277, 2864140, 3150554, 6301108, 7876385, 15752770, 31505540]

約数ペア:

[(1, 31505540), (2, 15752770), (4, 7876385), (5, 6301108), (10, 3150554), (11, 2864140), (20, 1575277), (22, 1432070), (44, 716035), (55, 572828), (71, 443740), (110, 286414), (142, 221870), (220, 143207), (284, 110935), (355, 88748), (710, 44374), (781, 40340), (1420, 22187), (1562, 20170), (2017, 15620), (3124, 10085), (3905, 8068), (4034, 7810)]