67688019

素因数分解:

$3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{9857}}^1$

素因数の和:9979

約数の個数: 24

約数和(自身を含む): 112775520

約数和(自身を除く): 45087501

約数列:

[1, 3, 7, 9, 21, 63, 109, 327, 763, 981, 2289, 6867, 9857, 29571, 68999, 88713, 206997, 620991, 1074413, 3223239, 7520891, 9669717, 22562673, 67688019]

約数ペア:

[(1, 67688019), (3, 22562673), (7, 9669717), (9, 7520891), (21, 3223239), (63, 1074413), (109, 620991), (327, 206997), (763, 88713), (981, 68999), (2289, 29571), (6867, 9857)]