129775720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{383}}^1$

素因数の和:634

約数の個数: 64

約数和(自身を含む): 301086720

約数和(自身を除く): 171311000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 197, 215, 344, 383, 394, 430, 766, 788, 860, 985, 1532, 1576, 1720, 1915, 1970, 3064, 3830, 3940, 7660, 7880, 8471, 15320, 16469, 16942, 32938, 33884, 42355, 65876, 67768, 75451, 82345, 84710, 131752, 150902, 164690, 169420, 301804, 329380, 338840, 377255, 603608, 658760, 754510, 1509020, 3018040, 3244393, 6488786, 12977572, 16221965, 25955144, 32443930, 64887860, 129775720]

約数ペア:

[(1, 129775720), (2, 64887860), (4, 32443930), (5, 25955144), (8, 16221965), (10, 12977572), (20, 6488786), (40, 3244393), (43, 3018040), (86, 1509020), (172, 754510), (197, 658760), (215, 603608), (344, 377255), (383, 338840), (394, 329380), (430, 301804), (766, 169420), (788, 164690), (860, 150902), (985, 131752), (1532, 84710), (1576, 82345), (1720, 75451), (1915, 67768), (1970, 65876), (3064, 42355), (3830, 33884), (3940, 32938), (7660, 16942), (7880, 16469), (8471, 15320)]