394403440

素因数分解:

$2^4\times 5^1\times {\mathrm{4930043}}^1$

素因数の和:4930056

約数の個数: 20

約数和(自身を含む): 916988184

約数和(自身を除く): 522584744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4930043, 9860086, 19720172, 24650215, 39440344, 49300430, 78880688, 98600860, 197201720, 394403440]

約数ペア:

[(1, 394403440), (2, 197201720), (4, 98600860), (5, 78880688), (8, 49300430), (10, 39440344), (16, 24650215), (20, 19720172), (40, 9860086), (80, 4930043)]