1280474260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1579}}^1\times {\mathrm{3119}}^1$

素因数の和:4720

約数の個数: 48

約数和(自身を含む): 2898604800

約数和(自身を除く): 1618130540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1579, 3119, 3158, 6238, 6316, 7895, 12476, 15595, 15790, 20527, 31190, 31580, 40547, 41054, 62380, 81094, 82108, 102635, 162188, 202735, 205270, 405470, 410540, 810940, 4924901, 9849802, 19699604, 24624505, 49249010, 64023713, 98498020, 128047426, 256094852, 320118565, 640237130, 1280474260]

約数ペア:

[(1, 1280474260), (2, 640237130), (4, 320118565), (5, 256094852), (10, 128047426), (13, 98498020), (20, 64023713), (26, 49249010), (52, 24624505), (65, 19699604), (130, 9849802), (260, 4924901), (1579, 810940), (3119, 410540), (3158, 405470), (6238, 205270), (6316, 202735), (7895, 162188), (12476, 102635), (15595, 82108), (15790, 81094), (20527, 62380), (31190, 41054), (31580, 40547)]