21609920

素因数分解:

$2^6\times 5^1\times {\mathrm{67531}}^1$

素因数の和:67548

約数の個数: 28

約数和(自身を含む): 51459384

約数和(自身を除く): 29849464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67531, 135062, 270124, 337655, 540248, 675310, 1080496, 1350620, 2160992, 2701240, 4321984, 5402480, 10804960, 21609920]

約数ペア:

[(1, 21609920), (2, 10804960), (4, 5402480), (5, 4321984), (8, 2701240), (10, 2160992), (16, 1350620), (20, 1080496), (32, 675310), (40, 540248), (64, 337655), (80, 270124), (160, 135062), (320, 67531)]