1272321891

素因数分解:

$3^3\times {\mathrm{73}}^1\times {\mathrm{645521}}^1$

素因数の和:645603

約数の個数: 16

約数和(自身を含む): 1910745120

約数和(自身を除く): 638423229

約数列:

[1, 3, 9, 27, 73, 219, 657, 1971, 645521, 1936563, 5809689, 17429067, 47123033, 141369099, 424107297, 1272321891]

約数ペア:

[(1, 1272321891), (3, 424107297), (9, 141369099), (27, 47123033), (73, 17429067), (219, 5809689), (657, 1936563), (1971, 645521)]