78480040

素因数分解:

$2^3\times 5^1\times {\mathrm{1962001}}^1$

素因数の和:1962012

約数の個数: 16

約数和(自身を含む): 176580180

約数和(自身を除く): 98100140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1962001, 3924002, 7848004, 9810005, 15696008, 19620010, 39240020, 78480040]

約数ペア:

[(1, 78480040), (2, 39240020), (4, 19620010), (5, 15696008), (8, 9810005), (10, 7848004), (20, 3924002), (40, 1962001)]