20651889

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{557}}^1\times {\mathrm{727}}^1$

素因数の和:1304

約数の個数: 16

約数和(自身を含む): 29248128

約数和(自身を除く): 8596239

約数列:

[1, 3, 17, 51, 557, 727, 1671, 2181, 9469, 12359, 28407, 37077, 404939, 1214817, 6883963, 20651889]

約数ペア:

[(1, 20651889), (3, 6883963), (17, 1214817), (51, 404939), (557, 37077), (727, 28407), (1671, 12359), (2181, 9469)]