20399040

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{787}}^1$

素因数の和:816

約数の個数: 140

約数和(自身を含む): 72655176

約数和(自身を除く): 52256136

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 192, 216, 240, 270, 288, 320, 324, 360, 405, 432, 480, 540, 576, 648, 720, 787, 810, 864, 960, 1080, 1296, 1440, 1574, 1620, 1728, 2160, 2361, 2592, 2880, 3148, 3240, 3935, 4320, 4722, 5184, 6296, 6480, 7083, 7870, 8640, 9444, 11805, 12592, 12960, 14166, 15740, 18888, 21249, 23610, 25184, 25920, 28332, 31480, 35415, 37776, 42498, 47220, 50368, 56664, 62960, 63747, 70830, 75552, 84996, 94440, 106245, 113328, 125920, 127494, 141660, 151104, 169992, 188880, 212490, 226656, 251840, 254988, 283320, 318735, 339984, 377760, 424980, 453312, 509976, 566640, 637470, 679968, 755520, 849960, 1019952, 1133280, 1274940, 1359936, 1699920, 2039904, 2266560, 2549880, 3399840, 4079808, 5099760, 6799680, 10199520, 20399040]

約数ペア:

[(1, 20399040), (2, 10199520), (3, 6799680), (4, 5099760), (5, 4079808), (6, 3399840), (8, 2549880), (9, 2266560), (10, 2039904), (12, 1699920), (15, 1359936), (16, 1274940), (18, 1133280), (20, 1019952), (24, 849960), (27, 755520), (30, 679968), (32, 637470), (36, 566640), (40, 509976), (45, 453312), (48, 424980), (54, 377760), (60, 339984), (64, 318735), (72, 283320), (80, 254988), (81, 251840), (90, 226656), (96, 212490), (108, 188880), (120, 169992), (135, 151104), (144, 141660), (160, 127494), (162, 125920), (180, 113328), (192, 106245), (216, 94440), (240, 84996), (270, 75552), (288, 70830), (320, 63747), (324, 62960), (360, 56664), (405, 50368), (432, 47220), (480, 42498), (540, 37776), (576, 35415), (648, 31480), (720, 28332), (787, 25920), (810, 25184), (864, 23610), (960, 21249), (1080, 18888), (1296, 15740), (1440, 14166), (1574, 12960), (1620, 12592), (1728, 11805), (2160, 9444), (2361, 8640), (2592, 7870), (2880, 7083), (3148, 6480), (3240, 6296), (3935, 5184), (4320, 4722)]