21149556

素因数分解:

$2^2\times 3^1\times {\mathrm{643}}^1\times {\mathrm{2741}}^1$

素因数の和:3391

約数の個数: 24

約数和(自身を含む): 49443744

約数和(自身を除く): 28294188

約数列:

[1, 2, 3, 4, 6, 12, 643, 1286, 1929, 2572, 2741, 3858, 5482, 7716, 8223, 10964, 16446, 32892, 1762463, 3524926, 5287389, 7049852, 10574778, 21149556]

約数ペア:

[(1, 21149556), (2, 10574778), (3, 7049852), (4, 5287389), (6, 3524926), (12, 1762463), (643, 32892), (1286, 16446), (1929, 10964), (2572, 8223), (2741, 7716), (3858, 5482)]