987288021

素因数分解:

$3^4\times {\mathrm{1741}}^1\times {\mathrm{7001}}^1$

素因数の和:8754

約数の個数: 20

約数和(自身を含む): 1475895564

約数和(自身を除く): 488607543

約数列:

[1, 3, 9, 27, 81, 1741, 5223, 7001, 15669, 21003, 47007, 63009, 141021, 189027, 567081, 12188741, 36566223, 109698669, 329096007, 987288021]

約数ペア:

[(1, 987288021), (3, 329096007), (9, 109698669), (27, 36566223), (81, 12188741), (1741, 567081), (5223, 189027), (7001, 141021), (15669, 63009), (21003, 47007)]