21139967960

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9971683}}^1$

素因数の和:9971747

約数の個数: 32

約数和(自身を含む): 48462384240

約数和(自身を除く): 27322416280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9971683, 19943366, 39886732, 49858415, 79773464, 99716830, 199433660, 398867320, 528499199, 1056998398, 2113996796, 2642495995, 4227993592, 5284991990, 10569983980, 21139967960]

約数ペア:

[(1, 21139967960), (2, 10569983980), (4, 5284991990), (5, 4227993592), (8, 2642495995), (10, 2113996796), (20, 1056998398), (40, 528499199), (53, 398867320), (106, 199433660), (212, 99716830), (265, 79773464), (424, 49858415), (530, 39886732), (1060, 19943366), (2120, 9971683)]