209901815

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{3823}}^1$

素因数の和:4046

約数の個数: 16

約数和(自身を含む): 256972800

約数和(自身を除く): 47070985

約数列:

[1, 5, 79, 139, 395, 695, 3823, 10981, 19115, 54905, 302017, 531397, 1510085, 2656985, 41980363, 209901815]

約数ペア:

[(1, 209901815), (5, 41980363), (79, 2656985), (139, 1510085), (395, 531397), (695, 302017), (3823, 54905), (10981, 19115)]