7920891

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4211}}^1$

素因数の和:4247

約数の個数: 24

約数和(自身を含む): 13141440

約数和(自身を除く): 5220549

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881, 4211, 12633, 37899, 46321, 80009, 138963, 240027, 416889, 720081, 880099, 2640297, 7920891]

約数ペア:

[(1, 7920891), (3, 2640297), (9, 880099), (11, 720081), (19, 416889), (33, 240027), (57, 138963), (99, 80009), (171, 46321), (209, 37899), (627, 12633), (1881, 4211)]