81531985

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{463}}^1\times {\mathrm{859}}^1$

素因数の和:1368

約数の個数: 16

約数和(自身を含む): 100558080

約数和(自身を除く): 19026095

約数列:

[1, 5, 41, 205, 463, 859, 2315, 4295, 18983, 35219, 94915, 176095, 397717, 1988585, 16306397, 81531985]

約数ペア:

[(1, 81531985), (5, 16306397), (41, 1988585), (205, 397717), (463, 176095), (859, 94915), (2315, 35219), (4295, 18983)]