18189920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:280

約数の個数: 96

約数和(自身を含む): 49896000

約数和(自身を除く): 31706080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 109, 112, 140, 149, 160, 218, 224, 280, 298, 436, 545, 560, 596, 745, 763, 872, 1043, 1090, 1120, 1192, 1490, 1526, 1744, 2086, 2180, 2384, 2980, 3052, 3488, 3815, 4172, 4360, 4768, 5215, 5960, 6104, 7630, 8344, 8720, 10430, 11920, 12208, 15260, 16241, 16688, 17440, 20860, 23840, 24416, 30520, 32482, 33376, 41720, 61040, 64964, 81205, 83440, 113687, 122080, 129928, 162410, 166880, 227374, 259856, 324820, 454748, 519712, 568435, 649640, 909496, 1136870, 1299280, 1818992, 2273740, 2598560, 3637984, 4547480, 9094960, 18189920]

約数ペア:

[(1, 18189920), (2, 9094960), (4, 4547480), (5, 3637984), (7, 2598560), (8, 2273740), (10, 1818992), (14, 1299280), (16, 1136870), (20, 909496), (28, 649640), (32, 568435), (35, 519712), (40, 454748), (56, 324820), (70, 259856), (80, 227374), (109, 166880), (112, 162410), (140, 129928), (149, 122080), (160, 113687), (218, 83440), (224, 81205), (280, 64964), (298, 61040), (436, 41720), (545, 33376), (560, 32482), (596, 30520), (745, 24416), (763, 23840), (872, 20860), (1043, 17440), (1090, 16688), (1120, 16241), (1192, 15260), (1490, 12208), (1526, 11920), (1744, 10430), (2086, 8720), (2180, 8344), (2384, 7630), (2980, 6104), (3052, 5960), (3488, 5215), (3815, 4768), (4172, 4360)]