19801245

素因数分解:

$3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{9497}}^1$

素因数の和:9644

約数の個数: 16

約数和(自身を含む): 31913280

約数和(自身を除く): 12112035

約数列:

[1, 3, 5, 15, 139, 417, 695, 2085, 9497, 28491, 47485, 142455, 1320083, 3960249, 6600415, 19801245]

約数ペア:

[(1, 19801245), (3, 6600415), (5, 3960249), (15, 1320083), (139, 142455), (417, 47485), (695, 28491), (2085, 9497)]