19985528

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2311}}^1$

素因数の和:2387

約数の個数: 32

約数和(自身を含む): 39951360

約数和(自身を除く): 19965832

約数列:

[1, 2, 4, 8, 23, 46, 47, 92, 94, 184, 188, 376, 1081, 2162, 2311, 4324, 4622, 8648, 9244, 18488, 53153, 106306, 108617, 212612, 217234, 425224, 434468, 868936, 2498191, 4996382, 9992764, 19985528]

約数ペア:

[(1, 19985528), (2, 9992764), (4, 4996382), (8, 2498191), (23, 868936), (46, 434468), (47, 425224), (92, 217234), (94, 212612), (184, 108617), (188, 106306), (376, 53153), (1081, 18488), (2162, 9244), (2311, 8648), (4324, 4622)]