21211804

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{331}}^1\times {\mathrm{433}}^1$

素因数の和:805

約数の個数: 24

約数和(自身を含む): 38327408

約数和(自身を除く): 17115604

約数列:

[1, 2, 4, 37, 74, 148, 331, 433, 662, 866, 1324, 1732, 12247, 16021, 24494, 32042, 48988, 64084, 143323, 286646, 573292, 5302951, 10605902, 21211804]

約数ペア:

[(1, 21211804), (2, 10605902), (4, 5302951), (37, 573292), (74, 286646), (148, 143323), (331, 64084), (433, 48988), (662, 32042), (866, 24494), (1324, 16021), (1732, 12247)]