81821561

素因数分解:

${\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{647}}^1$

素因数の和:880

約数の個数: 16

約数和(自身を含む): 89299584

約数和(自身を除く): 7478023

約数列:

[1, 17, 43, 173, 647, 731, 2941, 7439, 10999, 27821, 111931, 126463, 472957, 1902827, 4813033, 81821561]

約数ペア:

[(1, 81821561), (17, 4813033), (43, 1902827), (173, 472957), (647, 126463), (731, 111931), (2941, 27821), (7439, 10999)]