21254877

素因数分解:

$3^2\times 7^2\times {\mathrm{48197}}^1$

素因数の和:48217

約数の個数: 18

約数和(自身を含む): 35714718

約数和(自身を除く): 14459841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 48197, 144591, 337379, 433773, 1012137, 2361653, 3036411, 7084959, 21254877]

約数ペア:

[(1, 21254877), (3, 7084959), (7, 3036411), (9, 2361653), (21, 1012137), (49, 433773), (63, 337379), (147, 144591), (441, 48197)]