21000724829

素因数分解:

$7^3\times {\mathrm{173}}^1\times {\mathrm{353911}}^1$

素因数の和:354105

約数の個数: 16

約数和(自身を含む): 24632275200

約数和(自身を除く): 3631550371

約数列:

[1, 7, 49, 173, 343, 1211, 8477, 59339, 353911, 2477377, 17341639, 61226603, 121391473, 428586221, 3000103547, 21000724829]

約数ペア:

[(1, 21000724829), (7, 3000103547), (49, 428586221), (173, 121391473), (343, 61226603), (1211, 17341639), (8477, 2477377), (59339, 353911)]