21812733

素因数分解:

$3^4\times {\mathrm{53}}^1\times {\mathrm{5081}}^1$

素因数の和:5146

約数の個数: 20

約数和(自身を含む): 33205788

約数和(自身を除く): 11393055

約数列:

[1, 3, 9, 27, 53, 81, 159, 477, 1431, 4293, 5081, 15243, 45729, 137187, 269293, 411561, 807879, 2423637, 7270911, 21812733]

約数ペア:

[(1, 21812733), (3, 7270911), (9, 2423637), (27, 807879), (53, 411561), (81, 269293), (159, 137187), (477, 45729), (1431, 15243), (4293, 5081)]