31142540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{10889}}^1$

素因数の和:10922

約数の個数: 48

約数和(自身を含む): 76839840

約数和(自身を除く): 45697300

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 10889, 21778, 43556, 54445, 108890, 119779, 141557, 217780, 239558, 283114, 479116, 566228, 598895, 707785, 1197790, 1415570, 1557127, 2395580, 2831140, 3114254, 6228508, 7785635, 15571270, 31142540]

約数ペア:

[(1, 31142540), (2, 15571270), (4, 7785635), (5, 6228508), (10, 3114254), (11, 2831140), (13, 2395580), (20, 1557127), (22, 1415570), (26, 1197790), (44, 707785), (52, 598895), (55, 566228), (65, 479116), (110, 283114), (130, 239558), (143, 217780), (220, 141557), (260, 119779), (286, 108890), (572, 54445), (715, 43556), (1430, 21778), (2860, 10889)]