81520947

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{1979}}^1$

素因数の和:2207

約数の個数: 24

約数和(自身を含む): 123552000

約数和(自身を除く): 42031053

約数列:

[1, 3, 9, 23, 69, 199, 207, 597, 1791, 1979, 4577, 5937, 13731, 17811, 41193, 45517, 136551, 393821, 409653, 1181463, 3544389, 9057883, 27173649, 81520947]

約数ペア:

[(1, 81520947), (3, 27173649), (9, 9057883), (23, 3544389), (69, 1181463), (199, 409653), (207, 393821), (597, 136551), (1791, 45517), (1979, 41193), (4577, 17811), (5937, 13731)]