661180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2543}}^1$

素因数の和:2565

約数の個数: 24

約数和(自身を含む): 1495872

約数和(自身を除く): 834692

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2543, 5086, 10172, 12715, 25430, 33059, 50860, 66118, 132236, 165295, 330590, 661180]

約数ペア:

[(1, 661180), (2, 330590), (4, 165295), (5, 132236), (10, 66118), (13, 50860), (20, 33059), (26, 25430), (52, 12715), (65, 10172), (130, 5086), (260, 2543)]