9819981

素因数分解:

$3^3\times {\mathrm{443}}^1\times {\mathrm{821}}^1$

素因数の和:1273

約数の個数: 16

約数和(自身を含む): 14598720

約数和(自身を除く): 4778739

約数列:

[1, 3, 9, 27, 443, 821, 1329, 2463, 3987, 7389, 11961, 22167, 363703, 1091109, 3273327, 9819981]

約数ペア:

[(1, 9819981), (3, 3273327), (9, 1091109), (27, 363703), (443, 22167), (821, 11961), (1329, 7389), (2463, 3987)]