20871649

素因数分解:

${\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{401}}^1$

素因数の和:528

約数の個数: 16

約数和(自身を含む): 22846464

約数和(自身を除く): 1974815

約数列:

[1, 23, 31, 73, 401, 713, 1679, 2263, 9223, 12431, 29273, 52049, 285913, 673279, 907463, 20871649]

約数ペア:

[(1, 20871649), (23, 907463), (31, 673279), (73, 285913), (401, 52049), (713, 29273), (1679, 12431), (2263, 9223)]