21578560

素因数分解:

$2^6\times 5^1\times {\mathrm{67433}}^1$

素因数の和:67450

約数の個数: 28

約数和(自身を含む): 51384708

約数和(自身を除く): 29806148

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67433, 134866, 269732, 337165, 539464, 674330, 1078928, 1348660, 2157856, 2697320, 4315712, 5394640, 10789280, 21578560]

約数ペア:

[(1, 21578560), (2, 10789280), (4, 5394640), (5, 4315712), (8, 2697320), (10, 2157856), (16, 1348660), (20, 1078928), (32, 674330), (40, 539464), (64, 337165), (80, 269732), (160, 134866), (320, 67433)]