990423

素因数分解:

$3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:291

約数の個数: 24

約数和(自身を含む): 1664000

約数和(自身を除く): 673577

約数列:

[1, 3, 7, 9, 21, 63, 79, 199, 237, 553, 597, 711, 1393, 1659, 1791, 4179, 4977, 12537, 15721, 47163, 110047, 141489, 330141, 990423]

約数ペア:

[(1, 990423), (3, 330141), (7, 141489), (9, 110047), (21, 47163), (63, 15721), (79, 12537), (199, 4977), (237, 4179), (553, 1791), (597, 1659), (711, 1393)]