81710980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{10837}}^1$

素因数の和:10888

約数の個数: 48

約数和(自身を含む): 191182320

約数和(自身を除く): 109471340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 3770, 7540, 10837, 21674, 43348, 54185, 108370, 140881, 216740, 281762, 314273, 563524, 628546, 704405, 1257092, 1408810, 1571365, 2817620, 3142730, 4085549, 6285460, 8171098, 16342196, 20427745, 40855490, 81710980]

約数ペア:

[(1, 81710980), (2, 40855490), (4, 20427745), (5, 16342196), (10, 8171098), (13, 6285460), (20, 4085549), (26, 3142730), (29, 2817620), (52, 1571365), (58, 1408810), (65, 1257092), (116, 704405), (130, 628546), (145, 563524), (260, 314273), (290, 281762), (377, 216740), (580, 140881), (754, 108370), (1508, 54185), (1885, 43348), (3770, 21674), (7540, 10837)]