21888831

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1\times {\mathrm{787}}^1$

素因数の和:990

約数の個数: 16

約数和(自身を含む): 29855744

約数和(自身を除く): 7966913

約数列:

[1, 3, 73, 127, 219, 381, 787, 2361, 9271, 27813, 57451, 99949, 172353, 299847, 7296277, 21888831]

約数ペア:

[(1, 21888831), (3, 7296277), (73, 299847), (127, 172353), (219, 99949), (381, 57451), (787, 27813), (2361, 9271)]