25216605

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 45405360

約数和(自身を除く): 20188755

約数列:

[1, 3, 5, 9, 15, 45, 53, 97, 109, 159, 265, 291, 327, 477, 485, 545, 795, 873, 981, 1455, 1635, 2385, 4365, 4905, 5141, 5777, 10573, 15423, 17331, 25705, 28885, 31719, 46269, 51993, 52865, 77115, 86655, 95157, 158595, 231345, 259965, 475785, 560369, 1681107, 2801845, 5043321, 8405535, 25216605]

約数ペア:

[(1, 25216605), (3, 8405535), (5, 5043321), (9, 2801845), (15, 1681107), (45, 560369), (53, 475785), (97, 259965), (109, 231345), (159, 158595), (265, 95157), (291, 86655), (327, 77115), (477, 52865), (485, 51993), (545, 46269), (795, 31719), (873, 28885), (981, 25705), (1455, 17331), (1635, 15423), (2385, 10573), (4365, 5777), (4905, 5141)]