20961921

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{11863}}^1$

素因数の和:11916

約数の個数: 16

約数和(自身を含む): 30371840

約数和(自身を除く): 9409919

約数列:

[1, 3, 19, 31, 57, 93, 589, 1767, 11863, 35589, 225397, 367753, 676191, 1103259, 6987307, 20961921]

約数ペア:

[(1, 20961921), (3, 6987307), (19, 1103259), (31, 676191), (57, 367753), (93, 225397), (589, 35589), (1767, 11863)]