688618060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2648531}}^1$

素因数の和:2648553

約数の個数: 24

約数和(自身を含む): 1557336816

約数和(自身を除く): 868718756

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2648531, 5297062, 10594124, 13242655, 26485310, 34430903, 52970620, 68861806, 137723612, 172154515, 344309030, 688618060]

約数ペア:

[(1, 688618060), (2, 344309030), (4, 172154515), (5, 137723612), (10, 68861806), (13, 52970620), (20, 34430903), (26, 26485310), (52, 13242655), (65, 10594124), (130, 5297062), (260, 2648531)]