20591740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2731}}^1$

素因数の和:2782

約数の個数: 48

約数和(自身を含む): 48192480

約数和(自身を除く): 27600740

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, 2731, 3770, 5462, 7540, 10924, 13655, 27310, 35503, 54620, 71006, 79199, 142012, 158398, 177515, 316796, 355030, 395995, 710060, 791990, 1029587, 1583980, 2059174, 4118348, 5147935, 10295870, 20591740]

約数ペア:

[(1, 20591740), (2, 10295870), (4, 5147935), (5, 4118348), (10, 2059174), (13, 1583980), (20, 1029587), (26, 791990), (29, 710060), (52, 395995), (58, 355030), (65, 316796), (116, 177515), (130, 158398), (145, 142012), (260, 79199), (290, 71006), (377, 54620), (580, 35503), (754, 27310), (1508, 13655), (1885, 10924), (2731, 7540), (3770, 5462)]