20784335

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{709}}^1$

素因数の和:779

約数の個数: 32

約数和(自身を含む): 30058560

約数和(自身を除く): 9274225

約数列:

[1, 5, 11, 13, 41, 55, 65, 143, 205, 451, 533, 709, 715, 2255, 2665, 3545, 5863, 7799, 9217, 29069, 29315, 38995, 46085, 101387, 145345, 319759, 377897, 506935, 1598795, 1889485, 4156867, 20784335]

約数ペア:

[(1, 20784335), (5, 4156867), (11, 1889485), (13, 1598795), (41, 506935), (55, 377897), (65, 319759), (143, 145345), (205, 101387), (451, 46085), (533, 38995), (709, 29315), (715, 29069), (2255, 9217), (2665, 7799), (3545, 5863)]