21016639

素因数分解:

$7^3\times {\mathrm{71}}^1\times {\mathrm{863}}^1$

素因数の和:955

約数の個数: 16

約数和(自身を含む): 24883200

約数和(自身を除く): 3866561

約数列:

[1, 7, 49, 71, 343, 497, 863, 3479, 6041, 24353, 42287, 61273, 296009, 428911, 3002377, 21016639]

約数ペア:

[(1, 21016639), (7, 3002377), (49, 428911), (71, 296009), (343, 61273), (497, 42287), (863, 24353), (3479, 6041)]