319540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1229}}^1$

素因数の和:1251

約数の個数: 24

約数和(自身を含む): 723240

約数和(自身を除く): 403700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1229, 2458, 4916, 6145, 12290, 15977, 24580, 31954, 63908, 79885, 159770, 319540]

約数ペア:

[(1, 319540), (2, 159770), (4, 79885), (5, 63908), (10, 31954), (13, 24580), (20, 15977), (26, 12290), (52, 6145), (65, 4916), (130, 2458), (260, 1229)]