21527821

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1933}}^1$

素因数の和:2020

約数の個数: 16

約数和(自身を含む): 25869184

約数和(自身を除く): 4341363

約数列:

[1, 7, 37, 43, 259, 301, 1591, 1933, 11137, 13531, 71521, 83119, 500647, 581833, 3075403, 21527821]

約数ペア:

[(1, 21527821), (7, 3075403), (37, 581833), (43, 500647), (259, 83119), (301, 71521), (1591, 13531), (1933, 11137)]