20219240

素因数分解:

$2^3\times 5^1\times {\mathrm{505481}}^1$

素因数の和:505492

約数の個数: 16

約数和(自身を含む): 45493380

約数和(自身を除く): 25274140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 505481, 1010962, 2021924, 2527405, 4043848, 5054810, 10109620, 20219240]

約数ペア:

[(1, 20219240), (2, 10109620), (4, 5054810), (5, 4043848), (8, 2527405), (10, 2021924), (20, 1010962), (40, 505481)]