21971452

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{919}}^1$

素因数の和:1105

約数の個数: 24

約数和(自身を含む): 39670400

約数和(自身を除く): 17698948

約数列:

[1, 2, 4, 43, 86, 139, 172, 278, 556, 919, 1838, 3676, 5977, 11954, 23908, 39517, 79034, 127741, 158068, 255482, 510964, 5492863, 10985726, 21971452]

約数ペア:

[(1, 21971452), (2, 10985726), (4, 5492863), (43, 510964), (86, 255482), (139, 158068), (172, 127741), (278, 79034), (556, 39517), (919, 23908), (1838, 11954), (3676, 5977)]