21171437

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1901}}^1$

素因数の和:1988

約数の個数: 16

約数和(自身を含む): 25441152

約数和(自身を除く): 4269715

約数列:

[1, 7, 37, 43, 259, 301, 1591, 1901, 11137, 13307, 70337, 81743, 492359, 572201, 3024491, 21171437]

約数ペア:

[(1, 21171437), (7, 3024491), (37, 572201), (43, 492359), (259, 81743), (301, 70337), (1591, 13307), (1901, 11137)]