646750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{199}}^1$

素因数の和:229

約数の個数: 32

約数和(自身を含む): 1310400

約数和(自身を除く): 663650

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 199, 250, 325, 398, 650, 995, 1625, 1990, 2587, 3250, 4975, 5174, 9950, 12935, 24875, 25870, 49750, 64675, 129350, 323375, 646750]

約数ペア:

[(1, 646750), (2, 323375), (5, 129350), (10, 64675), (13, 49750), (25, 25870), (26, 24875), (50, 12935), (65, 9950), (125, 5174), (130, 4975), (199, 3250), (250, 2587), (325, 1990), (398, 1625), (650, 995)]