20728084

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{2087}}^1$

素因数の和:2295

約数の個数: 24

約数和(自身を含む): 39287808

約数和(自身を除く): 18559724

約数列:

[1, 2, 4, 13, 26, 52, 191, 382, 764, 2087, 2483, 4174, 4966, 8348, 9932, 27131, 54262, 108524, 398617, 797234, 1594468, 5182021, 10364042, 20728084]

約数ペア:

[(1, 20728084), (2, 10364042), (4, 5182021), (13, 1594468), (26, 797234), (52, 398617), (191, 108524), (382, 54262), (764, 27131), (2087, 9932), (2483, 8348), (4174, 4966)]