80799970

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{2137}}^1$

素因数の和:2362

約数の個数: 32

約数和(自身を含む): 153936000

約数和(自身を除く): 73136030

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 199, 398, 995, 1990, 2137, 3781, 4274, 7562, 10685, 18905, 21370, 37810, 40603, 81206, 203015, 406030, 425263, 850526, 2126315, 4252630, 8079997, 16159994, 40399985, 80799970]

約数ペア:

[(1, 80799970), (2, 40399985), (5, 16159994), (10, 8079997), (19, 4252630), (38, 2126315), (95, 850526), (190, 425263), (199, 406030), (398, 203015), (995, 81206), (1990, 40603), (2137, 37810), (3781, 21370), (4274, 18905), (7562, 10685)]