81345645

素因数分解:

$3^2\times 5^1\times {\mathrm{1087}}^1\times {\mathrm{1663}}^1$

素因数の和:2761

約数の個数: 24

約数和(自身を含む): 141213696

約数和(自身を除く): 59868051

約数列:

[1, 3, 5, 9, 15, 45, 1087, 1663, 3261, 4989, 5435, 8315, 9783, 14967, 16305, 24945, 48915, 74835, 1807681, 5423043, 9038405, 16269129, 27115215, 81345645]

約数ペア:

[(1, 81345645), (3, 27115215), (5, 16269129), (9, 9038405), (15, 5423043), (45, 1807681), (1087, 74835), (1663, 48915), (3261, 24945), (4989, 16305), (5435, 14967), (8315, 9783)]