20403783

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{241}}^1\times {\mathrm{409}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 30956640

約数和(自身を除く): 10552857

約数列:

[1, 3, 9, 23, 69, 207, 241, 409, 723, 1227, 2169, 3681, 5543, 9407, 16629, 28221, 49887, 84663, 98569, 295707, 887121, 2267087, 6801261, 20403783]

約数ペア:

[(1, 20403783), (3, 6801261), (9, 2267087), (23, 887121), (69, 295707), (207, 98569), (241, 84663), (409, 49887), (723, 28221), (1227, 16629), (2169, 9407), (3681, 5543)]