21286366927

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{27919}}^1$

素因数の和:28135

約数の個数: 32

約数和(自身を含む): 26535168000

約数和(自身を除く): 5248801073

約数列:

[1, 7, 17, 43, 119, 149, 301, 731, 1043, 2533, 5117, 6407, 17731, 27919, 44849, 108919, 195433, 474623, 762433, 1200517, 3322361, 4159931, 8403619, 20408789, 29119517, 70718827, 142861523, 178877033, 495031789, 1252139231, 3040909561, 21286366927]

約数ペア:

[(1, 21286366927), (7, 3040909561), (17, 1252139231), (43, 495031789), (119, 178877033), (149, 142861523), (301, 70718827), (731, 29119517), (1043, 20408789), (2533, 8403619), (5117, 4159931), (6407, 3322361), (17731, 1200517), (27919, 762433), (44849, 474623), (108919, 195433)]