81386685

素因数分解:

$3^2\times 5^1\times {\mathrm{887}}^1\times {\mathrm{2039}}^1$

素因数の和:2937

約数の個数: 24

約数和(自身を含む): 141298560

約数和(自身を除く): 59911875

約数列:

[1, 3, 5, 9, 15, 45, 887, 2039, 2661, 4435, 6117, 7983, 10195, 13305, 18351, 30585, 39915, 91755, 1808593, 5425779, 9042965, 16277337, 27128895, 81386685]

約数ペア:

[(1, 81386685), (3, 27128895), (5, 16277337), (9, 9042965), (15, 5425779), (45, 1808593), (887, 91755), (2039, 39915), (2661, 30585), (4435, 18351), (6117, 13305), (7983, 10195)]