216449905

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{28499}}^1$

素因数の和:28549

約数の個数: 24

約数和(自身を含む): 311904000

約数和(自身を除く): 95454095

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 7595, 28499, 142495, 199493, 883469, 997465, 1396451, 4417345, 6184283, 6982255, 30921415, 43289981, 216449905]

約数ペア:

[(1, 216449905), (5, 43289981), (7, 30921415), (31, 6982255), (35, 6184283), (49, 4417345), (155, 1396451), (217, 997465), (245, 883469), (1085, 199493), (1519, 142495), (7595, 28499)]