21947915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{9733}}^1$

素因数の和:9790

約数の個数: 16

約数和(自身を含む): 29435616

約数和(自身を除く): 7487701

約数列:

[1, 5, 11, 41, 55, 205, 451, 2255, 9733, 48665, 107063, 399053, 535315, 1995265, 4389583, 21947915]

約数ペア:

[(1, 21947915), (5, 4389583), (11, 1995265), (41, 535315), (55, 399053), (205, 107063), (451, 48665), (2255, 9733)]