21331954

素因数分解:

$2^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{1997}}^1$

素因数の和:2122

約数の個数: 24

約数和(自身を含む): 37582380

約数和(自身を除く): 16250426

約数列:

[1, 2, 7, 14, 49, 98, 109, 218, 763, 1526, 1997, 3994, 5341, 10682, 13979, 27958, 97853, 195706, 217673, 435346, 1523711, 3047422, 10665977, 21331954]

約数ペア:

[(1, 21331954), (2, 10665977), (7, 3047422), (14, 1523711), (49, 435346), (98, 217673), (109, 195706), (218, 97853), (763, 27958), (1526, 13979), (1997, 10682), (3994, 5341)]