81366921

素因数分解:

$3^2\times {\mathrm{181}}^1\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:637

約数の個数: 24

約数和(自身を含む): 119246400

約数和(自身を除く): 37879479

約数列:

[1, 3, 9, 181, 199, 251, 543, 597, 753, 1629, 1791, 2259, 36019, 45431, 49949, 108057, 136293, 149847, 324171, 408879, 449541, 9040769, 27122307, 81366921]

約数ペア:

[(1, 81366921), (3, 27122307), (9, 9040769), (181, 449541), (199, 408879), (251, 324171), (543, 149847), (597, 136293), (753, 108057), (1629, 49949), (1791, 45431), (2259, 36019)]