78131080

素因数分解:

$2^3\times 5^1\times {\mathrm{1953277}}^1$

素因数の和:1953288

約数の個数: 16

約数和(自身を含む): 175795020

約数和(自身を除く): 97663940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1953277, 3906554, 7813108, 9766385, 15626216, 19532770, 39065540, 78131080]

約数ペア:

[(1, 78131080), (2, 39065540), (4, 19532770), (5, 15626216), (8, 9766385), (10, 7813108), (20, 3906554), (40, 1953277)]