7281981

素因数分解:

$3^6\times 7^1\times {\mathrm{1427}}^1$

素因数の和:1452

約数の個数: 28

約数和(自身を含む): 12486432

約数和(自身を除く): 5204451

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1427, 1701, 4281, 5103, 9989, 12843, 29967, 38529, 89901, 115587, 269703, 346761, 809109, 1040283, 2427327, 7281981]

約数ペア:

[(1, 7281981), (3, 2427327), (7, 1040283), (9, 809109), (21, 346761), (27, 269703), (63, 115587), (81, 89901), (189, 38529), (243, 29967), (567, 12843), (729, 9989), (1427, 5103), (1701, 4281)]