81985120

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1031}}^1$

素因数の和:1124

約数の個数: 96

約数和(自身を含む): 224695296

約数和(自身を除く): 142710176

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 71, 80, 112, 140, 142, 160, 224, 280, 284, 355, 497, 560, 568, 710, 994, 1031, 1120, 1136, 1420, 1988, 2062, 2272, 2485, 2840, 3976, 4124, 4970, 5155, 5680, 7217, 7952, 8248, 9940, 10310, 11360, 14434, 15904, 16496, 19880, 20620, 28868, 32992, 36085, 39760, 41240, 57736, 72170, 73201, 79520, 82480, 115472, 144340, 146402, 164960, 230944, 288680, 292804, 366005, 512407, 577360, 585608, 732010, 1024814, 1154720, 1171216, 1464020, 2049628, 2342432, 2562035, 2928040, 4099256, 5124070, 5856080, 8198512, 10248140, 11712160, 16397024, 20496280, 40992560, 81985120]

約数ペア:

[(1, 81985120), (2, 40992560), (4, 20496280), (5, 16397024), (7, 11712160), (8, 10248140), (10, 8198512), (14, 5856080), (16, 5124070), (20, 4099256), (28, 2928040), (32, 2562035), (35, 2342432), (40, 2049628), (56, 1464020), (70, 1171216), (71, 1154720), (80, 1024814), (112, 732010), (140, 585608), (142, 577360), (160, 512407), (224, 366005), (280, 292804), (284, 288680), (355, 230944), (497, 164960), (560, 146402), (568, 144340), (710, 115472), (994, 82480), (1031, 79520), (1120, 73201), (1136, 72170), (1420, 57736), (1988, 41240), (2062, 39760), (2272, 36085), (2485, 32992), (2840, 28868), (3976, 20620), (4124, 19880), (4970, 16496), (5155, 15904), (5680, 14434), (7217, 11360), (7952, 10310), (8248, 9940)]