20999701970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{161536169}}^1$

素因数の和:161536189

約数の個数: 16

約数和(自身を含む): 40707114840

約数和(自身を除く): 19707412870

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 161536169, 323072338, 807680845, 1615361690, 2099970197, 4199940394, 10499850985, 20999701970]

約数ペア:

[(1, 20999701970), (2, 10499850985), (5, 4199940394), (10, 2099970197), (13, 1615361690), (26, 807680845), (65, 323072338), (130, 161536169)]