26778680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{15569}}^1$

素因数の和:15623

約数の個数: 32

約数和(自身を含む): 61657200

約数和(自身を除く): 34878520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 15569, 31138, 62276, 77845, 124552, 155690, 311380, 622760, 669467, 1338934, 2677868, 3347335, 5355736, 6694670, 13389340, 26778680]

約数ペア:

[(1, 26778680), (2, 13389340), (4, 6694670), (5, 5355736), (8, 3347335), (10, 2677868), (20, 1338934), (40, 669467), (43, 622760), (86, 311380), (172, 155690), (215, 124552), (344, 77845), (430, 62276), (860, 31138), (1720, 15569)]