21820208

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71777}}^1$

素因数の和:71804

約数の個数: 20

約数和(自身を含む): 44502360

約数和(自身を除く): 22682152

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71777, 143554, 287108, 574216, 1148432, 1363763, 2727526, 5455052, 10910104, 21820208]

約数ペア:

[(1, 21820208), (2, 10910104), (4, 5455052), (8, 2727526), (16, 1363763), (19, 1148432), (38, 574216), (76, 287108), (152, 143554), (304, 71777)]