21897755

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{13729}}^1$

素因数の和:13774

約数の個数: 16

約数和(自身を含む): 29656800

約数和(自身を除く): 7759045

約数列:

[1, 5, 11, 29, 55, 145, 319, 1595, 13729, 68645, 151019, 398141, 755095, 1990705, 4379551, 21897755]

約数ペア:

[(1, 21897755), (5, 4379551), (11, 1990705), (29, 755095), (55, 398141), (145, 151019), (319, 68645), (1595, 13729)]