21008193

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{3571}}^1$

素因数の和:3664

約数の個数: 16

約数和(自身を含む): 29318976

約数和(自身を除く): 8310783

約数列:

[1, 3, 37, 53, 111, 159, 1961, 3571, 5883, 10713, 132127, 189263, 396381, 567789, 7002731, 21008193]

約数ペア:

[(1, 21008193), (3, 7002731), (37, 567789), (53, 396381), (111, 189263), (159, 132127), (1961, 10713), (3571, 5883)]