128981440

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{811}}^1$

素因数の和:906

約数の個数: 112

約数和(自身を含む): 356396544

約数和(自身を除く): 227415104

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 71, 80, 112, 140, 142, 160, 224, 280, 284, 320, 355, 448, 497, 560, 568, 710, 811, 994, 1120, 1136, 1420, 1622, 1988, 2240, 2272, 2485, 2840, 3244, 3976, 4055, 4544, 4970, 5677, 5680, 6488, 7952, 8110, 9940, 11354, 11360, 12976, 15904, 16220, 19880, 22708, 22720, 25952, 28385, 31808, 32440, 39760, 45416, 51904, 56770, 57581, 64880, 79520, 90832, 113540, 115162, 129760, 159040, 181664, 227080, 230324, 259520, 287905, 363328, 403067, 454160, 460648, 575810, 806134, 908320, 921296, 1151620, 1612268, 1816640, 1842592, 2015335, 2303240, 3224536, 3685184, 4030670, 4606480, 6449072, 8061340, 9212960, 12898144, 16122680, 18425920, 25796288, 32245360, 64490720, 128981440]

約数ペア:

[(1, 128981440), (2, 64490720), (4, 32245360), (5, 25796288), (7, 18425920), (8, 16122680), (10, 12898144), (14, 9212960), (16, 8061340), (20, 6449072), (28, 4606480), (32, 4030670), (35, 3685184), (40, 3224536), (56, 2303240), (64, 2015335), (70, 1842592), (71, 1816640), (80, 1612268), (112, 1151620), (140, 921296), (142, 908320), (160, 806134), (224, 575810), (280, 460648), (284, 454160), (320, 403067), (355, 363328), (448, 287905), (497, 259520), (560, 230324), (568, 227080), (710, 181664), (811, 159040), (994, 129760), (1120, 115162), (1136, 113540), (1420, 90832), (1622, 79520), (1988, 64880), (2240, 57581), (2272, 56770), (2485, 51904), (2840, 45416), (3244, 39760), (3976, 32440), (4055, 31808), (4544, 28385), (4970, 25952), (5677, 22720), (5680, 22708), (6488, 19880), (7952, 16220), (8110, 15904), (9940, 12976), (11354, 11360)]