990981

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{127}}^1$

素因数の和:170

約数の個数: 24

約数和(自身を含む): 1571840

約数和(自身を除く): 580859

約数列:

[1, 3, 9, 17, 27, 51, 127, 153, 289, 381, 459, 867, 1143, 2159, 2601, 3429, 6477, 7803, 19431, 36703, 58293, 110109, 330327, 990981]

約数ペア:

[(1, 990981), (3, 330327), (9, 110109), (17, 58293), (27, 36703), (51, 19431), (127, 7803), (153, 6477), (289, 3429), (381, 2601), (459, 2159), (867, 1143)]