21512708

素因数分解:

$2^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{3061}}^1$

素因数の和:3323

約数の個数: 24

約数和(自身を含む): 43210944

約数和(自身を除く): 21698236

約数列:

[1, 2, 4, 7, 14, 28, 251, 502, 1004, 1757, 3061, 3514, 6122, 7028, 12244, 21427, 42854, 85708, 768311, 1536622, 3073244, 5378177, 10756354, 21512708]

約数ペア:

[(1, 21512708), (2, 10756354), (4, 5378177), (7, 3073244), (14, 1536622), (28, 768311), (251, 85708), (502, 42854), (1004, 21427), (1757, 12244), (3061, 7028), (3514, 6122)]