18581121

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 30750720

約数和(自身を除く): 12169599

約数列:

[1, 3, 9, 13, 31, 39, 47, 93, 109, 117, 141, 279, 327, 403, 423, 611, 981, 1209, 1417, 1457, 1833, 3379, 3627, 4251, 4371, 5123, 5499, 10137, 12753, 13113, 15369, 18941, 30411, 43927, 46107, 56823, 66599, 131781, 158813, 170469, 199797, 395343, 476439, 599391, 1429317, 2064569, 6193707, 18581121]

約数ペア:

[(1, 18581121), (3, 6193707), (9, 2064569), (13, 1429317), (31, 599391), (39, 476439), (47, 395343), (93, 199797), (109, 170469), (117, 158813), (141, 131781), (279, 66599), (327, 56823), (403, 46107), (423, 43927), (611, 30411), (981, 18941), (1209, 15369), (1417, 13113), (1457, 12753), (1833, 10137), (3379, 5499), (3627, 5123), (4251, 4371)]