81365880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{227}}^1$

素因数の和:373

約数の個数: 128

約数和(自身を含む): 256089600

約数和(自身を除く): 174723720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 58, 60, 87, 103, 116, 120, 145, 174, 206, 227, 232, 290, 309, 348, 412, 435, 454, 515, 580, 618, 681, 696, 824, 870, 908, 1030, 1135, 1160, 1236, 1362, 1545, 1740, 1816, 2060, 2270, 2472, 2724, 2987, 3090, 3405, 3480, 4120, 4540, 5448, 5974, 6180, 6583, 6810, 8961, 9080, 11948, 12360, 13166, 13620, 14935, 17922, 19749, 23381, 23896, 26332, 27240, 29870, 32915, 35844, 39498, 44805, 46762, 52664, 59740, 65830, 70143, 71688, 78996, 89610, 93524, 98745, 116905, 119480, 131660, 140286, 157992, 179220, 187048, 197490, 233810, 263320, 280572, 350715, 358440, 394980, 467620, 561144, 678049, 701430, 789960, 935240, 1356098, 1402860, 2034147, 2712196, 2805720, 3390245, 4068294, 5424392, 6780490, 8136588, 10170735, 13560980, 16273176, 20341470, 27121960, 40682940, 81365880]

約数ペア:

[(1, 81365880), (2, 40682940), (3, 27121960), (4, 20341470), (5, 16273176), (6, 13560980), (8, 10170735), (10, 8136588), (12, 6780490), (15, 5424392), (20, 4068294), (24, 3390245), (29, 2805720), (30, 2712196), (40, 2034147), (58, 1402860), (60, 1356098), (87, 935240), (103, 789960), (116, 701430), (120, 678049), (145, 561144), (174, 467620), (206, 394980), (227, 358440), (232, 350715), (290, 280572), (309, 263320), (348, 233810), (412, 197490), (435, 187048), (454, 179220), (515, 157992), (580, 140286), (618, 131660), (681, 119480), (696, 116905), (824, 98745), (870, 93524), (908, 89610), (1030, 78996), (1135, 71688), (1160, 70143), (1236, 65830), (1362, 59740), (1545, 52664), (1740, 46762), (1816, 44805), (2060, 39498), (2270, 35844), (2472, 32915), (2724, 29870), (2987, 27240), (3090, 26332), (3405, 23896), (3480, 23381), (4120, 19749), (4540, 17922), (5448, 14935), (5974, 13620), (6180, 13166), (6583, 12360), (6810, 11948), (8961, 9080)]