18802220

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13241}}^1$

素因数の和:13321

約数の個数: 24

約数和(自身を含む): 40043808

約数和(自身を除く): 21241588

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13241, 26482, 52964, 66205, 132410, 264820, 940111, 1880222, 3760444, 4700555, 9401110, 18802220]

約数ペア:

[(1, 18802220), (2, 9401110), (4, 4700555), (5, 3760444), (10, 1880222), (20, 940111), (71, 264820), (142, 132410), (284, 66205), (355, 52964), (710, 26482), (1420, 13241)]