66621220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{881}}^1$

素因数の和:1108

約数の個数: 48

約数和(自身を含む): 148176000

約数和(自身を除く): 81554780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 199, 380, 398, 796, 881, 995, 1762, 1990, 3524, 3781, 3980, 4405, 7562, 8810, 15124, 16739, 17620, 18905, 33478, 37810, 66956, 75620, 83695, 167390, 175319, 334780, 350638, 701276, 876595, 1753190, 3331061, 3506380, 6662122, 13324244, 16655305, 33310610, 66621220]

約数ペア:

[(1, 66621220), (2, 33310610), (4, 16655305), (5, 13324244), (10, 6662122), (19, 3506380), (20, 3331061), (38, 1753190), (76, 876595), (95, 701276), (190, 350638), (199, 334780), (380, 175319), (398, 167390), (796, 83695), (881, 75620), (995, 66956), (1762, 37810), (1990, 33478), (3524, 18905), (3781, 17620), (3980, 16739), (4405, 15124), (7562, 8810)]