20704580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79633}}^1$

素因数の和:79655

約数の個数: 24

約数和(自身を含む): 46824792

約数和(自身を除く): 26120212

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 79633, 159266, 318532, 398165, 796330, 1035229, 1592660, 2070458, 4140916, 5176145, 10352290, 20704580]

約数ペア:

[(1, 20704580), (2, 10352290), (4, 5176145), (5, 4140916), (10, 2070458), (13, 1592660), (20, 1035229), (26, 796330), (52, 398165), (65, 318532), (130, 159266), (260, 79633)]