199977771

素因数分解:

$3^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{9787}}^1$

素因数の和:9943

約数の個数: 24

約数和(自身を含む): 312432960

約数和(自身を除く): 112455189

約数列:

[1, 3, 7, 21, 49, 139, 147, 417, 973, 2919, 6811, 9787, 20433, 29361, 68509, 205527, 479563, 1360393, 1438689, 4081179, 9522751, 28568253, 66659257, 199977771]

約数ペア:

[(1, 199977771), (3, 66659257), (7, 28568253), (21, 9522751), (49, 4081179), (139, 1438689), (147, 1360393), (417, 479563), (973, 205527), (2919, 68509), (6811, 29361), (9787, 20433)]