20757620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2753}}^1$

素因数の和:2804

約数の個数: 48

約数和(自身を含む): 48580560

約数和(自身を除く): 27822940

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, 2753, 3770, 5506, 7540, 11012, 13765, 27530, 35789, 55060, 71578, 79837, 143156, 159674, 178945, 319348, 357890, 399185, 715780, 798370, 1037881, 1596740, 2075762, 4151524, 5189405, 10378810, 20757620]

約数ペア:

[(1, 20757620), (2, 10378810), (4, 5189405), (5, 4151524), (10, 2075762), (13, 1596740), (20, 1037881), (26, 798370), (29, 715780), (52, 399185), (58, 357890), (65, 319348), (116, 178945), (130, 159674), (145, 143156), (260, 79837), (290, 71578), (377, 55060), (580, 35789), (754, 27530), (1508, 13765), (1885, 11012), (2753, 7540), (3770, 5506)]