21081861

素因数分解:

$3^2\times {\mathrm{79}}^1\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:433

約数の個数: 24

約数和(自身を含む): 31200000

約数和(自身を除く): 10118139

約数列:

[1, 3, 9, 79, 149, 199, 237, 447, 597, 711, 1341, 1791, 11771, 15721, 29651, 35313, 47163, 88953, 105939, 141489, 266859, 2342429, 7027287, 21081861]

約数ペア:

[(1, 21081861), (3, 7027287), (9, 2342429), (79, 266859), (149, 141489), (199, 105939), (237, 88953), (447, 47163), (597, 35313), (711, 29651), (1341, 15721), (1791, 11771)]