17949920

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2609}}^1$

素因数の和:2667

約数の個数: 48

約数和(自身を含む): 43409520

約数和(自身を除く): 25459600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 2609, 3440, 5218, 6880, 10436, 13045, 20872, 26090, 41744, 52180, 83488, 104360, 112187, 208720, 224374, 417440, 448748, 560935, 897496, 1121870, 1794992, 2243740, 3589984, 4487480, 8974960, 17949920]

約数ペア:

[(1, 17949920), (2, 8974960), (4, 4487480), (5, 3589984), (8, 2243740), (10, 1794992), (16, 1121870), (20, 897496), (32, 560935), (40, 448748), (43, 417440), (80, 224374), (86, 208720), (160, 112187), (172, 104360), (215, 83488), (344, 52180), (430, 41744), (688, 26090), (860, 20872), (1376, 13045), (1720, 10436), (2609, 6880), (3440, 5218)]