642770

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:242

約数の個数: 32

約数和(自身を含む): 1296000

約数和(自身を除く): 653230

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 85, 95, 170, 190, 199, 323, 398, 646, 995, 1615, 1990, 3230, 3383, 3781, 6766, 7562, 16915, 18905, 33830, 37810, 64277, 128554, 321385, 642770]

約数ペア:

[(1, 642770), (2, 321385), (5, 128554), (10, 64277), (17, 37810), (19, 33830), (34, 18905), (38, 16915), (85, 7562), (95, 6766), (170, 3781), (190, 3383), (199, 3230), (323, 1990), (398, 1615), (646, 995)]