20891017

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{877}}^1$

素因数の和:1008

約数の個数: 16

約数和(自身を含む): 24780672

約数和(自身を除く): 3889655

約数列:

[1, 7, 41, 83, 287, 581, 877, 3403, 6139, 23821, 35957, 72791, 251699, 509537, 2984431, 20891017]

約数ペア:

[(1, 20891017), (7, 2984431), (41, 509537), (83, 251699), (287, 72791), (581, 35957), (877, 23821), (3403, 6139)]