20151620

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1567}}^1$

素因数の和:2219

約数の個数: 24

約数和(自身を含む): 42411264

約数和(自身を除く): 22259644

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 1567, 2572, 3134, 3215, 6268, 6430, 7835, 12860, 15670, 31340, 1007581, 2015162, 4030324, 5037905, 10075810, 20151620]

約数ペア:

[(1, 20151620), (2, 10075810), (4, 5037905), (5, 4030324), (10, 2015162), (20, 1007581), (643, 31340), (1286, 15670), (1567, 12860), (2572, 7835), (3134, 6430), (3215, 6268)]