319760080

素因数分解:

$2^4\times 5^1\times {\mathrm{3997001}}^1$

素因数の和:3997014

約数の個数: 20

約数和(自身を含む): 743442372

約数和(自身を除く): 423682292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3997001, 7994002, 15988004, 19985005, 31976008, 39970010, 63952016, 79940020, 159880040, 319760080]

約数ペア:

[(1, 319760080), (2, 159880040), (4, 79940020), (5, 63952016), (8, 39970010), (10, 31976008), (16, 19985005), (20, 15988004), (40, 7994002), (80, 3997001)]