31391997

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{16427}}^1$

素因数の和:16457

約数の個数: 24

約数和(自身を含む): 52438176

約数和(自身を除く): 21046179

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 16427, 49281, 114989, 213551, 344967, 640653, 804923, 1494857, 2414769, 4484571, 10463999, 31391997]

約数ペア:

[(1, 31391997), (3, 10463999), (7, 4484571), (13, 2414769), (21, 1494857), (39, 804923), (49, 640653), (91, 344967), (147, 213551), (273, 114989), (637, 49281), (1911, 16427)]