12681387

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:288

約数の個数: 32

約数和(自身を含む): 19712000

約数和(自身を除く): 7030613

約数列:

[1, 3, 9, 27, 31, 93, 109, 139, 279, 327, 417, 837, 981, 1251, 2943, 3379, 3753, 4309, 10137, 12927, 15151, 30411, 38781, 45453, 91233, 116343, 136359, 409077, 469681, 1409043, 4227129, 12681387]

約数ペア:

[(1, 12681387), (3, 4227129), (9, 1409043), (27, 469681), (31, 409077), (93, 136359), (109, 116343), (139, 91233), (279, 45453), (327, 38781), (417, 30411), (837, 15151), (981, 12927), (1251, 10137), (2943, 4309), (3379, 3753)]