1291420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4967}}^1$

素因数の和:4989

約数の個数: 24

約数和(自身を含む): 2921184

約数和(自身を除く): 1629764

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 4967, 9934, 19868, 24835, 49670, 64571, 99340, 129142, 258284, 322855, 645710, 1291420]

約数ペア:

[(1, 1291420), (2, 645710), (4, 322855), (5, 258284), (10, 129142), (13, 99340), (20, 64571), (26, 49670), (52, 24835), (65, 19868), (130, 9934), (260, 4967)]