21000297008

素因数分解:

$2^4\times {\mathrm{1117}}^1\times {\mathrm{1175039}}^1$

素因数の和:1176164

約数の個数: 20

約数和(自身を含む): 40724536320

約数和(自身を除く): 19724239312

約数列:

[1, 2, 4, 8, 16, 1117, 2234, 4468, 8936, 17872, 1175039, 2350078, 4700156, 9400312, 18800624, 1312518563, 2625037126, 5250074252, 10500148504, 21000297008]

約数ペア:

[(1, 21000297008), (2, 10500148504), (4, 5250074252), (8, 2625037126), (16, 1312518563), (1117, 18800624), (2234, 9400312), (4468, 4700156), (8936, 2350078), (17872, 1175039)]