19939479

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{281}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 31764480

約数和(自身を除く): 11825001

約数列:

[1, 3, 7, 21, 31, 93, 109, 217, 281, 327, 651, 763, 843, 1967, 2289, 3379, 5901, 8711, 10137, 23653, 26133, 30629, 60977, 70959, 91887, 182931, 214403, 643209, 949499, 2848497, 6646493, 19939479]

約数ペア:

[(1, 19939479), (3, 6646493), (7, 2848497), (21, 949499), (31, 643209), (93, 214403), (109, 182931), (217, 91887), (281, 70959), (327, 60977), (651, 30629), (763, 26133), (843, 23653), (1967, 10137), (2289, 8711), (3379, 5901)]