12980721

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{25603}}^1$

素因数の和:25632

約数の個数: 12

約数和(自身を含む): 18742128

約数和(自身を除く): 5761407

約数列:

[1, 3, 13, 39, 169, 507, 25603, 76809, 332839, 998517, 4326907, 12980721]

約数ペア:

[(1, 12980721), (3, 4326907), (13, 998517), (39, 332839), (169, 76809), (507, 25603)]