20378020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{6029}}^1$

素因数の和:6064

約数の個数: 36

約数和(自身を含む): 46346580

約数和(自身を除く): 25968560

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 6029, 12058, 24116, 30145, 60290, 78377, 120580, 156754, 313508, 391885, 783770, 1018901, 1567540, 2037802, 4075604, 5094505, 10189010, 20378020]

約数ペア:

[(1, 20378020), (2, 10189010), (4, 5094505), (5, 4075604), (10, 2037802), (13, 1567540), (20, 1018901), (26, 783770), (52, 391885), (65, 313508), (130, 156754), (169, 120580), (260, 78377), (338, 60290), (676, 30145), (845, 24116), (1690, 12058), (3380, 6029)]