81756540

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{463}}^1$

素因数の和:593

約数の個数: 120

約数和(自身を含む): 259385280

約数和(自身を除く): 177628740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 109, 135, 162, 180, 218, 270, 324, 327, 405, 436, 463, 540, 545, 654, 810, 926, 981, 1090, 1308, 1389, 1620, 1635, 1852, 1962, 2180, 2315, 2778, 2943, 3270, 3924, 4167, 4630, 4905, 5556, 5886, 6540, 6945, 8334, 8829, 9260, 9810, 11772, 12501, 13890, 14715, 16668, 17658, 19620, 20835, 25002, 27780, 29430, 35316, 37503, 41670, 44145, 50004, 50467, 58860, 62505, 75006, 83340, 88290, 100934, 125010, 150012, 151401, 176580, 187515, 201868, 250020, 252335, 302802, 375030, 454203, 504670, 605604, 750060, 757005, 908406, 1009340, 1362609, 1514010, 1816812, 2271015, 2725218, 3028020, 4087827, 4542030, 5450436, 6813045, 8175654, 9084060, 13626090, 16351308, 20439135, 27252180, 40878270, 81756540]

約数ペア:

[(1, 81756540), (2, 40878270), (3, 27252180), (4, 20439135), (5, 16351308), (6, 13626090), (9, 9084060), (10, 8175654), (12, 6813045), (15, 5450436), (18, 4542030), (20, 4087827), (27, 3028020), (30, 2725218), (36, 2271015), (45, 1816812), (54, 1514010), (60, 1362609), (81, 1009340), (90, 908406), (108, 757005), (109, 750060), (135, 605604), (162, 504670), (180, 454203), (218, 375030), (270, 302802), (324, 252335), (327, 250020), (405, 201868), (436, 187515), (463, 176580), (540, 151401), (545, 150012), (654, 125010), (810, 100934), (926, 88290), (981, 83340), (1090, 75006), (1308, 62505), (1389, 58860), (1620, 50467), (1635, 50004), (1852, 44145), (1962, 41670), (2180, 37503), (2315, 35316), (2778, 29430), (2943, 27780), (3270, 25002), (3924, 20835), (4167, 19620), (4630, 17658), (4905, 16668), (5556, 14715), (5886, 13890), (6540, 12501), (6945, 11772), (8334, 9810), (8829, 9260)]