20258836

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{1229}}^1$

素因数の和:1563

約数の個数: 24

約数和(自身を含む): 38331720

約数和(自身を除く): 18072884

約数列:

[1, 2, 4, 13, 26, 52, 317, 634, 1229, 1268, 2458, 4121, 4916, 8242, 15977, 16484, 31954, 63908, 389593, 779186, 1558372, 5064709, 10129418, 20258836]

約数ペア:

[(1, 20258836), (2, 10129418), (4, 5064709), (13, 1558372), (26, 779186), (52, 389593), (317, 63908), (634, 31954), (1229, 16484), (1268, 15977), (2458, 8242), (4121, 4916)]