21155337

素因数分解:

$3^5\times 7^1\times {\mathrm{12437}}^1$

素因数の和:12459

約数の個数: 24

約数和(自身を含む): 36219456

約数和(自身を除く): 15064119

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12437, 37311, 87059, 111933, 261177, 335799, 783531, 1007397, 2350593, 3022191, 7051779, 21155337]

約数ペア:

[(1, 21155337), (3, 7051779), (7, 3022191), (9, 2350593), (21, 1007397), (27, 783531), (63, 335799), (81, 261177), (189, 111933), (243, 87059), (567, 37311), (1701, 12437)]