17655280

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1109}}^1$

素因数の和:1321

約数の個数: 40

約数和(自身を含む): 41292000

約数和(自身を除く): 23636720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1109, 1592, 1990, 2218, 3184, 3980, 4436, 5545, 7960, 8872, 11090, 15920, 17744, 22180, 44360, 88720, 220691, 441382, 882764, 1103455, 1765528, 2206910, 3531056, 4413820, 8827640, 17655280]

約数ペア:

[(1, 17655280), (2, 8827640), (4, 4413820), (5, 3531056), (8, 2206910), (10, 1765528), (16, 1103455), (20, 882764), (40, 441382), (80, 220691), (199, 88720), (398, 44360), (796, 22180), (995, 17744), (1109, 15920), (1592, 11090), (1990, 8872), (2218, 7960), (3184, 5545), (3980, 4436)]