39800080

素因数分解:

$2^4\times 5^1\times {\mathrm{497501}}^1$

素因数の和:497514

約数の個数: 20

約数和(自身を含む): 92535372

約数和(自身を除く): 52735292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 497501, 995002, 1990004, 2487505, 3980008, 4975010, 7960016, 9950020, 19900040, 39800080]

約数ペア:

[(1, 39800080), (2, 19900040), (4, 9950020), (5, 7960016), (8, 4975010), (10, 3980008), (16, 2487505), (20, 1990004), (40, 995002), (80, 497501)]