18684008

素因数分解:

$2^3\times 7^1\times {\mathrm{557}}^1\times {\mathrm{599}}^1$

素因数の和:1169

約数の個数: 32

約数和(自身を含む): 40176000

約数和(自身を除く): 21491992

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 557, 599, 1114, 1198, 2228, 2396, 3899, 4193, 4456, 4792, 7798, 8386, 15596, 16772, 31192, 33544, 333643, 667286, 1334572, 2335501, 2669144, 4671002, 9342004, 18684008]

約数ペア:

[(1, 18684008), (2, 9342004), (4, 4671002), (7, 2669144), (8, 2335501), (14, 1334572), (28, 667286), (56, 333643), (557, 33544), (599, 31192), (1114, 16772), (1198, 15596), (2228, 8386), (2396, 7798), (3899, 4792), (4193, 4456)]