81139527

素因数分解:

$3^2\times 7^1\times {\mathrm{643}}^1\times {\mathrm{2003}}^1$

素因数の和:2659

約数の個数: 24

約数和(自身を含む): 134219904

約数和(自身を除く): 53080377

約数列:

[1, 3, 7, 9, 21, 63, 643, 1929, 2003, 4501, 5787, 6009, 13503, 14021, 18027, 40509, 42063, 126189, 1287929, 3863787, 9015503, 11591361, 27046509, 81139527]

約数ペア:

[(1, 81139527), (3, 27046509), (7, 11591361), (9, 9015503), (21, 3863787), (63, 1287929), (643, 126189), (1929, 42063), (2003, 40509), (4501, 18027), (5787, 14021), (6009, 13503)]