21308956

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{16493}}^1$

素因数の和:16533

約数の個数: 24

約数和(自身を含む): 41564880

約数和(自身を除く): 20255924

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 646, 1292, 16493, 32986, 65972, 280381, 313367, 560762, 626734, 1121524, 1253468, 5327239, 10654478, 21308956]

約数ペア:

[(1, 21308956), (2, 10654478), (4, 5327239), (17, 1253468), (19, 1121524), (34, 626734), (38, 560762), (68, 313367), (76, 280381), (323, 65972), (646, 32986), (1292, 16493)]