851000

素因数分解:

$2^3\times 5^3\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:81

約数の個数: 64

約数和(自身を含む): 2134080

約数和(自身を除く): 1283080

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 37, 40, 46, 50, 74, 92, 100, 115, 125, 148, 184, 185, 200, 230, 250, 296, 370, 460, 500, 575, 740, 851, 920, 925, 1000, 1150, 1480, 1702, 1850, 2300, 2875, 3404, 3700, 4255, 4600, 4625, 5750, 6808, 7400, 8510, 9250, 11500, 17020, 18500, 21275, 23000, 34040, 37000, 42550, 85100, 106375, 170200, 212750, 425500, 851000]

約数ペア:

[(1, 851000), (2, 425500), (4, 212750), (5, 170200), (8, 106375), (10, 85100), (20, 42550), (23, 37000), (25, 34040), (37, 23000), (40, 21275), (46, 18500), (50, 17020), (74, 11500), (92, 9250), (100, 8510), (115, 7400), (125, 6808), (148, 5750), (184, 4625), (185, 4600), (200, 4255), (230, 3700), (250, 3404), (296, 2875), (370, 2300), (460, 1850), (500, 1702), (575, 1480), (740, 1150), (851, 1000), (920, 925)]