20618560

素因数分解:

$2^6\times 5^1\times {\mathrm{64433}}^1$

素因数の和:64450

約数の個数: 28

約数和(自身を含む): 49098708

約数和(自身を除く): 28480148

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 64433, 128866, 257732, 322165, 515464, 644330, 1030928, 1288660, 2061856, 2577320, 4123712, 5154640, 10309280, 20618560]

約数ペア:

[(1, 20618560), (2, 10309280), (4, 5154640), (5, 4123712), (8, 2577320), (10, 2061856), (16, 1288660), (20, 1030928), (32, 644330), (40, 515464), (64, 322165), (80, 257732), (160, 128866), (320, 64433)]