20218896560

素因数分解:

$2^4\times 5^1\times {\mathrm{479}}^1\times {\mathrm{527633}}^1$

素因数の和:528125

約数の個数: 40

約数和(自身を含む): 47107163520

約数和(自身を除く): 26888266960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 479, 958, 1916, 2395, 3832, 4790, 7664, 9580, 19160, 38320, 527633, 1055266, 2110532, 2638165, 4221064, 5276330, 8442128, 10552660, 21105320, 42210640, 252736207, 505472414, 1010944828, 1263681035, 2021889656, 2527362070, 4043779312, 5054724140, 10109448280, 20218896560]

約数ペア:

[(1, 20218896560), (2, 10109448280), (4, 5054724140), (5, 4043779312), (8, 2527362070), (10, 2021889656), (16, 1263681035), (20, 1010944828), (40, 505472414), (80, 252736207), (479, 42210640), (958, 21105320), (1916, 10552660), (2395, 8442128), (3832, 5276330), (4790, 4221064), (7664, 2638165), (9580, 2110532), (19160, 1055266), (38320, 527633)]