21020440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2029}}^1$

素因数の和:2084

約数の個数: 64

約数和(自身を含む): 55540800

約数和(自身を除く): 34520360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 2029, 2072, 2590, 4058, 5180, 8116, 10145, 10360, 14203, 16232, 20290, 28406, 40580, 56812, 71015, 75073, 81160, 113624, 142030, 150146, 284060, 300292, 375365, 525511, 568120, 600584, 750730, 1051022, 1501460, 2102044, 2627555, 3002920, 4204088, 5255110, 10510220, 21020440]

約数ペア:

[(1, 21020440), (2, 10510220), (4, 5255110), (5, 4204088), (7, 3002920), (8, 2627555), (10, 2102044), (14, 1501460), (20, 1051022), (28, 750730), (35, 600584), (37, 568120), (40, 525511), (56, 375365), (70, 300292), (74, 284060), (140, 150146), (148, 142030), (185, 113624), (259, 81160), (280, 75073), (296, 71015), (370, 56812), (518, 40580), (740, 28406), (1036, 20290), (1295, 16232), (1480, 14203), (2029, 10360), (2072, 10145), (2590, 8116), (4058, 5180)]