51080080

素因数分解:

$2^4\times 5^1\times {\mathrm{638501}}^1$

素因数の和:638514

約数の個数: 20

約数和(自身を含む): 118761372

約数和(自身を除く): 67681292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 638501, 1277002, 2554004, 3192505, 5108008, 6385010, 10216016, 12770020, 25540040, 51080080]

約数ペア:

[(1, 51080080), (2, 25540040), (4, 12770020), (5, 10216016), (8, 6385010), (10, 5108008), (16, 3192505), (20, 2554004), (40, 1277002), (80, 638501)]