81947398

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{20873}}^1$

素因数の和:21039

約数の個数: 16

約数和(自身を含む): 133259616

約数和(自身を除く): 51312218

約数列:

[1, 2, 13, 26, 151, 302, 1963, 3926, 20873, 41746, 271349, 542698, 3151823, 6303646, 40973699, 81947398]

約数ペア:

[(1, 81947398), (2, 40973699), (13, 6303646), (26, 3151823), (151, 542698), (302, 271349), (1963, 41746), (3926, 20873)]