8404641

素因数分解:

$3^9\times 7^1\times {\mathrm{61}}^1$

素因数の和:95

約数の個数: 40

約数和(自身を含む): 14643904

約数和(自身を除く): 6239263

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 81, 183, 189, 243, 427, 549, 567, 729, 1281, 1647, 1701, 2187, 3843, 4941, 5103, 6561, 11529, 14823, 15309, 19683, 34587, 44469, 45927, 103761, 133407, 137781, 311283, 400221, 933849, 1200663, 2801547, 8404641]

約数ペア:

[(1, 8404641), (3, 2801547), (7, 1200663), (9, 933849), (21, 400221), (27, 311283), (61, 137781), (63, 133407), (81, 103761), (183, 45927), (189, 44469), (243, 34587), (427, 19683), (549, 15309), (567, 14823), (729, 11529), (1281, 6561), (1647, 5103), (1701, 4941), (2187, 3843)]