221980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1009}}^1$

素因数の和:1029

約数の個数: 24

約数和(自身を含む): 509040

約数和(自身を除く): 287060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1009, 2018, 4036, 5045, 10090, 11099, 20180, 22198, 44396, 55495, 110990, 221980]

約数ペア:

[(1, 221980), (2, 110990), (4, 55495), (5, 44396), (10, 22198), (11, 20180), (20, 11099), (22, 10090), (44, 5045), (55, 4036), (110, 2018), (220, 1009)]