638025260

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^2$

素因数の和:343

約数の個数: 72

約数和(自身を含む): 1411030656

約数和(自身を除く): 773005396

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 97, 103, 124, 155, 194, 206, 310, 388, 412, 485, 515, 620, 970, 1030, 1940, 2060, 3007, 3193, 6014, 6386, 9991, 10609, 12028, 12772, 15035, 15965, 19982, 21218, 30070, 31930, 39964, 42436, 49955, 53045, 60140, 63860, 99910, 106090, 199820, 212180, 309721, 328879, 619442, 657758, 1029073, 1238884, 1315516, 1548605, 1644395, 2058146, 3097210, 3288790, 4116292, 5145365, 6194420, 6577580, 10290730, 20581460, 31901263, 63802526, 127605052, 159506315, 319012630, 638025260]

約数ペア:

[(1, 638025260), (2, 319012630), (4, 159506315), (5, 127605052), (10, 63802526), (20, 31901263), (31, 20581460), (62, 10290730), (97, 6577580), (103, 6194420), (124, 5145365), (155, 4116292), (194, 3288790), (206, 3097210), (310, 2058146), (388, 1644395), (412, 1548605), (485, 1315516), (515, 1238884), (620, 1029073), (970, 657758), (1030, 619442), (1940, 328879), (2060, 309721), (3007, 212180), (3193, 199820), (6014, 106090), (6386, 99910), (9991, 63860), (10609, 60140), (12028, 53045), (12772, 49955), (15035, 42436), (15965, 39964), (19982, 31930), (21218, 30070)]