21888620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2903}}^1$

素因数の和:2954

約数の個数: 48

約数和(自身を含む): 51226560

約数和(自身を除く): 29337940

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, 2903, 3770, 5806, 7540, 11612, 14515, 29030, 37739, 58060, 75478, 84187, 150956, 168374, 188695, 336748, 377390, 420935, 754780, 841870, 1094431, 1683740, 2188862, 4377724, 5472155, 10944310, 21888620]

約数ペア:

[(1, 21888620), (2, 10944310), (4, 5472155), (5, 4377724), (10, 2188862), (13, 1683740), (20, 1094431), (26, 841870), (29, 754780), (52, 420935), (58, 377390), (65, 336748), (116, 188695), (130, 168374), (145, 150956), (260, 84187), (290, 75478), (377, 58060), (580, 37739), (754, 29030), (1508, 14515), (1885, 11612), (2903, 7540), (3770, 5806)]