78882160

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{20123}}^1$

素因数の和:20150

約数の個数: 60

約数和(自身を含む): 213354648

約数和(自身を除く): 134472488

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 20123, 40246, 80492, 100615, 140861, 160984, 201230, 281722, 321968, 402460, 563444, 704305, 804920, 986027, 1126888, 1408610, 1609840, 1972054, 2253776, 2817220, 3944108, 4930135, 5634440, 7888216, 9860270, 11268880, 15776432, 19720540, 39441080, 78882160]

約数ペア:

[(1, 78882160), (2, 39441080), (4, 19720540), (5, 15776432), (7, 11268880), (8, 9860270), (10, 7888216), (14, 5634440), (16, 4930135), (20, 3944108), (28, 2817220), (35, 2253776), (40, 1972054), (49, 1609840), (56, 1408610), (70, 1126888), (80, 986027), (98, 804920), (112, 704305), (140, 563444), (196, 402460), (245, 321968), (280, 281722), (392, 201230), (490, 160984), (560, 140861), (784, 100615), (980, 80492), (1960, 40246), (3920, 20123)]