21805294

素因数分解:

$2^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{2203}}^1$

素因数の和:2320

約数の個数: 24

約数和(自身を含む): 38442168

約数和(自身を除く): 16636874

約数列:

[1, 2, 7, 14, 49, 98, 101, 202, 707, 1414, 2203, 4406, 4949, 9898, 15421, 30842, 107947, 215894, 222503, 445006, 1557521, 3115042, 10902647, 21805294]

約数ペア:

[(1, 21805294), (2, 10902647), (7, 3115042), (14, 1557521), (49, 445006), (98, 222503), (101, 215894), (202, 107947), (707, 30842), (1414, 15421), (2203, 9898), (4406, 4949)]