20456020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2713}}^1$

素因数の和:2764

約数の個数: 48

約数和(自身を含む): 47874960

約数和(自身を除く): 27418940

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, 2713, 3770, 5426, 7540, 10852, 13565, 27130, 35269, 54260, 70538, 78677, 141076, 157354, 176345, 314708, 352690, 393385, 705380, 786770, 1022801, 1573540, 2045602, 4091204, 5114005, 10228010, 20456020]

約数ペア:

[(1, 20456020), (2, 10228010), (4, 5114005), (5, 4091204), (10, 2045602), (13, 1573540), (20, 1022801), (26, 786770), (29, 705380), (52, 393385), (58, 352690), (65, 314708), (116, 176345), (130, 157354), (145, 141076), (260, 78677), (290, 70538), (377, 54260), (580, 35269), (754, 27130), (1508, 13565), (1885, 10852), (2713, 7540), (3770, 5426)]