81615681

素因数分解:

$3^5\times 7^1\times {\mathrm{47981}}^1$

素因数の和:48003

約数の個数: 24

約数和(自身を含む): 139723584

約数和(自身を除く): 58107903

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 47981, 143943, 335867, 431829, 1007601, 1295487, 3022803, 3886461, 9068409, 11659383, 27205227, 81615681]

約数ペア:

[(1, 81615681), (3, 27205227), (7, 11659383), (9, 9068409), (21, 3886461), (27, 3022803), (63, 1295487), (81, 1007601), (189, 431829), (243, 335867), (567, 143943), (1701, 47981)]