20854989

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{4517}}^1$

素因数の和:4551

約数の個数: 24

約数和(自身を含む): 32891040

約数和(自身を除く): 12036051

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 1539, 4517, 4617, 13551, 40653, 85823, 121959, 257469, 365877, 772407, 1097631, 2317221, 6951663, 20854989]

約数ペア:

[(1, 20854989), (3, 6951663), (9, 2317221), (19, 1097631), (27, 772407), (57, 365877), (81, 257469), (171, 121959), (243, 85823), (513, 40653), (1539, 13551), (4517, 4617)]