78906280

素因数分解:

$2^3\times 5^1\times {\mathrm{1972657}}^1$

素因数の和:1972668

約数の個数: 16

約数和(自身を含む): 177539220

約数和(自身を除く): 98632940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1972657, 3945314, 7890628, 9863285, 15781256, 19726570, 39453140, 78906280]

約数ペア:

[(1, 78906280), (2, 39453140), (4, 19726570), (5, 15781256), (8, 9863285), (10, 7890628), (20, 3945314), (40, 1972657)]