81214220

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{41863}}^1$

素因数の和:41969

約数の個数: 24

約数和(自身を含む): 172312224

約数和(自身を除く): 91098004

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 41863, 83726, 167452, 209315, 418630, 837260, 4060711, 8121422, 16242844, 20303555, 40607110, 81214220]

約数ペア:

[(1, 81214220), (2, 40607110), (4, 20303555), (5, 16242844), (10, 8121422), (20, 4060711), (97, 837260), (194, 418630), (388, 209315), (485, 167452), (970, 83726), (1940, 41863)]