20121309

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{13229}}^1$

素因数の和:13261

約数の個数: 18

約数和(自身を含む): 31474170

約数和(自身を除く): 11352861

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 13229, 39687, 119061, 171977, 515931, 1547793, 2235701, 6707103, 20121309]

約数ペア:

[(1, 20121309), (3, 6707103), (9, 2235701), (13, 1547793), (39, 515931), (117, 171977), (169, 119061), (507, 39687), (1521, 13229)]