831820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 2016000

約数和(自身を除く): 1184180

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 199, 209, 220, 380, 398, 418, 796, 836, 995, 1045, 1990, 2090, 2189, 3781, 3980, 4180, 4378, 7562, 8756, 10945, 15124, 18905, 21890, 37810, 41591, 43780, 75620, 83182, 166364, 207955, 415910, 831820]

約数ペア:

[(1, 831820), (2, 415910), (4, 207955), (5, 166364), (10, 83182), (11, 75620), (19, 43780), (20, 41591), (22, 37810), (38, 21890), (44, 18905), (55, 15124), (76, 10945), (95, 8756), (110, 7562), (190, 4378), (199, 4180), (209, 3980), (220, 3781), (380, 2189), (398, 2090), (418, 1990), (796, 1045), (836, 995)]