21998889

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{20201}}^1$

素因数の和:20229

約数の個数: 18

約数和(自身を含む): 34929258

約数和(自身を除く): 12930369

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 20201, 60603, 181809, 222211, 666633, 1999899, 2444321, 7332963, 21998889]

約数ペア:

[(1, 21998889), (3, 7332963), (9, 2444321), (11, 1999899), (33, 666633), (99, 222211), (121, 181809), (363, 60603), (1089, 20201)]