278980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:88

約数の個数: 48

約数和(自身を含む): 670320

約数和(自身を除く): 391340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 37, 52, 58, 65, 74, 116, 130, 145, 148, 185, 260, 290, 370, 377, 481, 580, 740, 754, 962, 1073, 1508, 1885, 1924, 2146, 2405, 3770, 4292, 4810, 5365, 7540, 9620, 10730, 13949, 21460, 27898, 55796, 69745, 139490, 278980]

約数ペア:

[(1, 278980), (2, 139490), (4, 69745), (5, 55796), (10, 27898), (13, 21460), (20, 13949), (26, 10730), (29, 9620), (37, 7540), (52, 5365), (58, 4810), (65, 4292), (74, 3770), (116, 2405), (130, 2146), (145, 1924), (148, 1885), (185, 1508), (260, 1073), (290, 962), (370, 754), (377, 740), (481, 580)]