21304221

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{691}}^1$

素因数の和:976

約数の個数: 16

約数和(自身を含む): 29230080

約数和(自身を除く): 7925859

約数列:

[1, 3, 43, 129, 239, 691, 717, 2073, 10277, 29713, 30831, 89139, 165149, 495447, 7101407, 21304221]

約数ペア:

[(1, 21304221), (3, 7101407), (43, 495447), (129, 165149), (239, 89139), (691, 30831), (717, 29713), (2073, 10277)]