20139245

素因数分解:

$5^1\times 7^3\times {\mathrm{11743}}^1$

素因数の和:11769

約数の個数: 16

約数和(自身を含む): 28185600

約数和(自身を除く): 8046355

約数列:

[1, 5, 7, 35, 49, 245, 343, 1715, 11743, 58715, 82201, 411005, 575407, 2877035, 4027849, 20139245]

約数ペア:

[(1, 20139245), (5, 4027849), (7, 2877035), (35, 575407), (49, 411005), (245, 82201), (343, 58715), (1715, 11743)]