12981020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{49927}}^1$

素因数の和:49949

約数の個数: 24

約数和(自身を含む): 29357664

約数和(自身を除く): 16376644

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 49927, 99854, 199708, 249635, 499270, 649051, 998540, 1298102, 2596204, 3245255, 6490510, 12981020]

約数ペア:

[(1, 12981020), (2, 6490510), (4, 3245255), (5, 2596204), (10, 1298102), (13, 998540), (20, 649051), (26, 499270), (52, 249635), (65, 199708), (130, 99854), (260, 49927)]