78240080

素因数分解:

$2^4\times 5^1\times {\mathrm{978001}}^1$

素因数の和:978014

約数の個数: 20

約数和(自身を含む): 181908372

約数和(自身を除く): 103668292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 978001, 1956002, 3912004, 4890005, 7824008, 9780010, 15648016, 19560020, 39120040, 78240080]

約数ペア:

[(1, 78240080), (2, 39120040), (4, 19560020), (5, 15648016), (8, 9780010), (10, 7824008), (16, 4890005), (20, 3912004), (40, 1956002), (80, 978001)]