21438447

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{1237}}^1$

素因数の和:1402

約数の個数: 16

約数和(自身を含む): 29414880

約数和(自身を除く): 7976433

約数列:

[1, 3, 53, 109, 159, 327, 1237, 3711, 5777, 17331, 65561, 134833, 196683, 404499, 7146149, 21438447]

約数ペア:

[(1, 21438447), (3, 7146149), (53, 404499), (109, 196683), (159, 134833), (327, 65561), (1237, 17331), (3711, 5777)]