21489717

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{1997}}^1$

素因数の和:2228

約数の個数: 16

約数和(自身を含む): 30497472

約数和(自身を除く): 9007755

約数列:

[1, 3, 17, 51, 211, 633, 1997, 3587, 5991, 10761, 33949, 101847, 421367, 1264101, 7163239, 21489717]

約数ペア:

[(1, 21489717), (3, 7163239), (17, 1264101), (51, 421367), (211, 101847), (633, 33949), (1997, 10761), (3587, 5991)]