81225425

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{311}}^1\times {\mathrm{337}}^1$

素因数の和:689

約数の個数: 24

約数和(自身を含む): 104612352

約数和(自身を除く): 23386927

約数列:

[1, 5, 25, 31, 155, 311, 337, 775, 1555, 1685, 7775, 8425, 9641, 10447, 48205, 52235, 104807, 241025, 261175, 524035, 2620175, 3249017, 16245085, 81225425]

約数ペア:

[(1, 81225425), (5, 16245085), (25, 3249017), (31, 2620175), (155, 524035), (311, 261175), (337, 241025), (775, 104807), (1555, 52235), (1685, 48205), (7775, 10447), (8425, 9641)]