21052011

素因数分解:

$3^1\times {\mathrm{179}}^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:578

約数の個数: 16

約数和(自身を含む): 28512000

約数和(自身を除く): 7459989

約数列:

[1, 3, 179, 197, 199, 537, 591, 597, 35263, 35621, 39203, 105789, 106863, 117609, 7017337, 21052011]

約数ペア:

[(1, 21052011), (3, 7017337), (179, 117609), (197, 106863), (199, 105789), (537, 39203), (591, 35621), (597, 35263)]