128690721

素因数分解:

$3^3\times {\mathrm{173}}^1\times {\mathrm{27551}}^1$

素因数の和:27733

約数の個数: 16

約数和(自身を含む): 191761920

約数和(自身を除く): 63071199

約数列:

[1, 3, 9, 27, 173, 519, 1557, 4671, 27551, 82653, 247959, 743877, 4766323, 14298969, 42896907, 128690721]

約数ペア:

[(1, 128690721), (3, 42896907), (9, 14298969), (27, 4766323), (173, 743877), (519, 247959), (1557, 82653), (4671, 27551)]