13720905

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{523}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 26485056

約数和(自身を除く): 12764151

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 53, 55, 99, 159, 165, 265, 477, 495, 523, 583, 795, 1569, 1749, 2385, 2615, 2915, 4707, 5247, 5753, 7845, 8745, 17259, 23535, 26235, 27719, 28765, 51777, 83157, 86295, 138595, 249471, 258885, 304909, 415785, 914727, 1247355, 1524545, 2744181, 4573635, 13720905]

約数ペア:

[(1, 13720905), (3, 4573635), (5, 2744181), (9, 1524545), (11, 1247355), (15, 914727), (33, 415785), (45, 304909), (53, 258885), (55, 249471), (99, 138595), (159, 86295), (165, 83157), (265, 51777), (477, 28765), (495, 27719), (523, 26235), (583, 23535), (795, 17259), (1569, 8745), (1749, 7845), (2385, 5753), (2615, 5247), (2915, 4707)]