21376280

素因数分解:

$2^3\times 5^1\times {\mathrm{534407}}^1$

素因数の和:534418

約数の個数: 16

約数和(自身を含む): 48096720

約数和(自身を除く): 26720440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 534407, 1068814, 2137628, 2672035, 4275256, 5344070, 10688140, 21376280]

約数ペア:

[(1, 21376280), (2, 10688140), (4, 5344070), (5, 4275256), (8, 2672035), (10, 2137628), (20, 1068814), (40, 534407)]