81801321

素因数分解:

$3^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{21521}}^1$

素因数の和:21712

約数の個数: 16

約数和(自身を含む): 125344128

約数和(自身を除く): 43542807

約数列:

[1, 3, 7, 21, 181, 543, 1267, 3801, 21521, 64563, 150647, 451941, 3895301, 11685903, 27267107, 81801321]

約数ペア:

[(1, 81801321), (3, 27267107), (7, 11685903), (21, 3895301), (181, 451941), (543, 150647), (1267, 64563), (3801, 21521)]