21149739

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{1109}}^1$

素因数の和:1291

約数の個数: 24

約数和(自身を含む): 33131280

約数和(自身を除く): 11981541

約数列:

[1, 3, 9, 13, 39, 117, 163, 489, 1109, 1467, 2119, 3327, 6357, 9981, 14417, 19071, 43251, 129753, 180767, 542301, 1626903, 2349971, 7049913, 21149739]

約数ペア:

[(1, 21149739), (3, 7049913), (9, 2349971), (13, 1626903), (39, 542301), (117, 180767), (163, 129753), (489, 43251), (1109, 19071), (1467, 14417), (2119, 9981), (3327, 6357)]