21252355

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1\times {\mathrm{641}}^1$

素因数の和:1014

約数の個数: 16

約数和(自身を含む): 26964000

約数和(自身を除く): 5711645

約数列:

[1, 5, 19, 95, 349, 641, 1745, 3205, 6631, 12179, 33155, 60895, 223709, 1118545, 4250471, 21252355]

約数ペア:

[(1, 21252355), (5, 4250471), (19, 1118545), (95, 223709), (349, 60895), (641, 33155), (1745, 12179), (3205, 6631)]