21975877

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{6961}}^1$

素因数の和:7020

約数の個数: 16

約数和(自身を含む): 28070784

約数和(自身を除く): 6094907

約数列:

[1, 7, 11, 41, 77, 287, 451, 3157, 6961, 48727, 76571, 285401, 535997, 1997807, 3139411, 21975877]

約数ペア:

[(1, 21975877), (7, 3139411), (11, 1997807), (41, 535997), (77, 285401), (287, 76571), (451, 48727), (3157, 6961)]