81268880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1$

素因数の和:277

約数の個数: 160

約数和(自身を含む): 239984640

約数和(自身を除く): 158715760

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 79, 80, 88, 110, 112, 140, 154, 158, 167, 176, 220, 280, 308, 316, 334, 385, 395, 440, 553, 560, 616, 632, 668, 770, 790, 835, 869, 880, 1106, 1169, 1232, 1264, 1336, 1540, 1580, 1670, 1738, 1837, 2212, 2338, 2672, 2765, 3080, 3160, 3340, 3476, 3674, 4345, 4424, 4676, 5530, 5845, 6083, 6160, 6320, 6680, 6952, 7348, 8690, 8848, 9185, 9352, 11060, 11690, 12166, 12859, 13193, 13360, 13904, 14696, 17380, 18370, 18704, 22120, 23380, 24332, 25718, 26386, 29392, 30415, 34760, 36740, 44240, 46760, 48664, 51436, 52772, 60830, 64295, 65965, 69520, 73480, 92351, 93520, 97328, 102872, 105544, 121660, 128590, 131930, 145123, 146960, 184702, 205744, 211088, 243320, 257180, 263860, 290246, 369404, 461755, 486640, 514360, 527720, 580492, 725615, 738808, 923510, 1015861, 1028720, 1055440, 1160984, 1451230, 1477616, 1847020, 2031722, 2321968, 2902460, 3694040, 4063444, 5079305, 5804920, 7388080, 8126888, 10158610, 11609840, 16253776, 20317220, 40634440, 81268880]

約数ペア:

[(1, 81268880), (2, 40634440), (4, 20317220), (5, 16253776), (7, 11609840), (8, 10158610), (10, 8126888), (11, 7388080), (14, 5804920), (16, 5079305), (20, 4063444), (22, 3694040), (28, 2902460), (35, 2321968), (40, 2031722), (44, 1847020), (55, 1477616), (56, 1451230), (70, 1160984), (77, 1055440), (79, 1028720), (80, 1015861), (88, 923510), (110, 738808), (112, 725615), (140, 580492), (154, 527720), (158, 514360), (167, 486640), (176, 461755), (220, 369404), (280, 290246), (308, 263860), (316, 257180), (334, 243320), (385, 211088), (395, 205744), (440, 184702), (553, 146960), (560, 145123), (616, 131930), (632, 128590), (668, 121660), (770, 105544), (790, 102872), (835, 97328), (869, 93520), (880, 92351), (1106, 73480), (1169, 69520), (1232, 65965), (1264, 64295), (1336, 60830), (1540, 52772), (1580, 51436), (1670, 48664), (1738, 46760), (1837, 44240), (2212, 36740), (2338, 34760), (2672, 30415), (2765, 29392), (3080, 26386), (3160, 25718), (3340, 24332), (3476, 23380), (3674, 22120), (4345, 18704), (4424, 18370), (4676, 17380), (5530, 14696), (5845, 13904), (6083, 13360), (6160, 13193), (6320, 12859), (6680, 12166), (6952, 11690), (7348, 11060), (8690, 9352), (8848, 9185)]