21974945

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{661}}^1$

素因数の和:836

約数の個数: 16

約数和(自身を含む): 27089040

約数和(自身を除く): 5114095

約数列:

[1, 5, 61, 109, 305, 545, 661, 3305, 6649, 33245, 40321, 72049, 201605, 360245, 4394989, 21974945]

約数ペア:

[(1, 21974945), (5, 4394989), (61, 360245), (109, 201605), (305, 72049), (545, 40321), (661, 33245), (3305, 6649)]