21057567

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{12739}}^1$

素因数の和:12790

約数の個数: 16

約数和(自身を含む): 30576000

約数和(自身を除く): 9518433

約数列:

[1, 3, 19, 29, 57, 87, 551, 1653, 12739, 38217, 242041, 369431, 726123, 1108293, 7019189, 21057567]

約数ペア:

[(1, 21057567), (3, 7019189), (19, 1108293), (29, 726123), (57, 369431), (87, 242041), (551, 38217), (1653, 12739)]