21982807

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4021}}^1$

素因数の和:4110

約数の個数: 16

約数和(自身を含む): 27800064

約数和(自身を除く): 5817257

約数列:

[1, 7, 11, 71, 77, 497, 781, 4021, 5467, 28147, 44231, 285491, 309617, 1998437, 3140401, 21982807]

約数ペア:

[(1, 21982807), (7, 3140401), (11, 1998437), (71, 309617), (77, 285491), (497, 44231), (781, 28147), (4021, 5467)]