21854707

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{4271}}^1$

素因数の和:4338

約数の個数: 16

約数和(自身を含む): 27067392

約数和(自身を除く): 5212685

約数列:

[1, 7, 17, 43, 119, 301, 731, 4271, 5117, 29897, 72607, 183653, 508249, 1285571, 3122101, 21854707]

約数ペア:

[(1, 21854707), (7, 3122101), (17, 1285571), (43, 508249), (119, 183653), (301, 72607), (731, 29897), (4271, 5117)]