78561387

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{431}}^1$

素因数の和:640

約数の個数: 32

約数和(自身を含む): 120130560

約数和(自身を除く): 41569173

約数列:

[1, 3, 9, 27, 43, 129, 157, 387, 431, 471, 1161, 1293, 1413, 3879, 4239, 6751, 11637, 18533, 20253, 55599, 60759, 67667, 166797, 182277, 203001, 500391, 609003, 1827009, 2909681, 8729043, 26187129, 78561387]

約数ペア:

[(1, 78561387), (3, 26187129), (9, 8729043), (27, 2909681), (43, 1827009), (129, 609003), (157, 500391), (387, 203001), (431, 182277), (471, 166797), (1161, 67667), (1293, 60759), (1413, 55599), (3879, 20253), (4239, 18533), (6751, 11637)]