21091653

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{11213}}^1$

素因数の和:11249

約数の個数: 24

約数和(自身を含む): 34987680

約数和(自身を除く): 13896027

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881, 11213, 33639, 100917, 123343, 213047, 370029, 639141, 1110087, 1917423, 2343517, 7030551, 21091653]

約数ペア:

[(1, 21091653), (3, 7030551), (9, 2343517), (11, 1917423), (19, 1110087), (33, 639141), (57, 370029), (99, 213047), (171, 123343), (209, 100917), (627, 33639), (1881, 11213)]