12978981

素因数分解:

$3^3\times {\mathrm{269}}^1\times {\mathrm{1787}}^1$

素因数の和:2065

約数の個数: 16

約数和(自身を含む): 19310400

約数和(自身を除く): 6331419

約数列:

[1, 3, 9, 27, 269, 807, 1787, 2421, 5361, 7263, 16083, 48249, 480703, 1442109, 4326327, 12978981]

約数ペア:

[(1, 12978981), (3, 4326327), (9, 1442109), (27, 480703), (269, 48249), (807, 16083), (1787, 7263), (2421, 5361)]