20747720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74099}}^1$

素因数の和:74117

約数の個数: 32

約数和(自身を含む): 53352000

約数和(自身を除く): 32604280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74099, 148198, 296396, 370495, 518693, 592792, 740990, 1037386, 1481980, 2074772, 2593465, 2963960, 4149544, 5186930, 10373860, 20747720]

約数ペア:

[(1, 20747720), (2, 10373860), (4, 5186930), (5, 4149544), (7, 2963960), (8, 2593465), (10, 2074772), (14, 1481980), (20, 1037386), (28, 740990), (35, 592792), (40, 518693), (56, 370495), (70, 296396), (140, 148198), (280, 74099)]