16991247

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{571}}^1$

素因数の和:703

約数の個数: 32

約数和(自身を含む): 28188160

約数和(自身を除く): 11196913

約数列:

[1, 3, 7, 13, 21, 39, 91, 109, 273, 327, 571, 763, 1417, 1713, 2289, 3997, 4251, 7423, 9919, 11991, 22269, 29757, 51961, 62239, 155883, 186717, 435673, 809107, 1307019, 2427321, 5663749, 16991247]

約数ペア:

[(1, 16991247), (3, 5663749), (7, 2427321), (13, 1307019), (21, 809107), (39, 435673), (91, 186717), (109, 155883), (273, 62239), (327, 51961), (571, 29757), (763, 22269), (1417, 11991), (1713, 9919), (2289, 7423), (3997, 4251)]