18785180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13229}}^1$

素因数の和:13309

約数の個数: 24

約数和(自身を含む): 40007520

約数和(自身を除く): 21222340

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13229, 26458, 52916, 66145, 132290, 264580, 939259, 1878518, 3757036, 4696295, 9392590, 18785180]

約数ペア:

[(1, 18785180), (2, 9392590), (4, 4696295), (5, 3757036), (10, 1878518), (20, 939259), (71, 264580), (142, 132290), (284, 66145), (355, 52916), (710, 26458), (1420, 13229)]