21000377060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{80770681}}^1$

素因数の和:80770703

約数の個数: 24

約数和(自身を含む): 47493161016

約数和(自身を除く): 26492783956

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 80770681, 161541362, 323082724, 403853405, 807706810, 1050018853, 1615413620, 2100037706, 4200075412, 5250094265, 10500188530, 21000377060]

約数ペア:

[(1, 21000377060), (2, 10500188530), (4, 5250094265), (5, 4200075412), (10, 2100037706), (13, 1615413620), (20, 1050018853), (26, 807706810), (52, 403853405), (65, 323082724), (130, 161541362), (260, 80770681)]