21298216

素因数分解:

$2^3\times {\mathrm{1153}}^1\times {\mathrm{2309}}^1$

素因数の和:3468

約数の個数: 16

約数和(自身を含む): 39986100

約数和(自身を除く): 18687884

約数列:

[1, 2, 4, 8, 1153, 2306, 2309, 4612, 4618, 9224, 9236, 18472, 2662277, 5324554, 10649108, 21298216]

約数ペア:

[(1, 21298216), (2, 10649108), (4, 5324554), (8, 2662277), (1153, 18472), (2306, 9236), (2309, 9224), (4612, 4618)]