21426681

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{7927}}^1$

素因数の和:8000

約数の個数: 16

約数和(自身を含む): 30824064

約数和(自身を除く): 9397383

約数列:

[1, 3, 17, 51, 53, 159, 901, 2703, 7927, 23781, 134759, 404277, 420131, 1260393, 7142227, 21426681]

約数ペア:

[(1, 21426681), (3, 7142227), (17, 1260393), (51, 420131), (53, 404277), (159, 134759), (901, 23781), (2703, 7927)]