81831640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{1039}}^1$

素因数の和:1240

約数の個数: 64

約数和(自身を含む): 202176000

約数和(自身を除く): 120344360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 179, 220, 358, 440, 716, 895, 1039, 1432, 1790, 1969, 2078, 3580, 3938, 4156, 5195, 7160, 7876, 8312, 9845, 10390, 11429, 15752, 19690, 20780, 22858, 39380, 41560, 45716, 57145, 78760, 91432, 114290, 185981, 228580, 371962, 457160, 743924, 929905, 1487848, 1859810, 2045791, 3719620, 4091582, 7439240, 8183164, 10228955, 16366328, 20457910, 40915820, 81831640]

約数ペア:

[(1, 81831640), (2, 40915820), (4, 20457910), (5, 16366328), (8, 10228955), (10, 8183164), (11, 7439240), (20, 4091582), (22, 3719620), (40, 2045791), (44, 1859810), (55, 1487848), (88, 929905), (110, 743924), (179, 457160), (220, 371962), (358, 228580), (440, 185981), (716, 114290), (895, 91432), (1039, 78760), (1432, 57145), (1790, 45716), (1969, 41560), (2078, 39380), (3580, 22858), (3938, 20780), (4156, 19690), (5195, 15752), (7160, 11429), (7876, 10390), (8312, 9845)]