21240872

素因数分解:

$2^3\times {\mathrm{1117}}^1\times {\mathrm{2377}}^1$

素因数の和:3500

約数の個数: 16

約数和(自身を含む): 39879060

約数和(自身を除く): 18638188

約数列:

[1, 2, 4, 8, 1117, 2234, 2377, 4468, 4754, 8936, 9508, 19016, 2655109, 5310218, 10620436, 21240872]

約数ペア:

[(1, 21240872), (2, 10620436), (4, 5310218), (8, 2655109), (1117, 19016), (2234, 9508), (2377, 8936), (4468, 4754)]