20400737

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{977}}^1$

素因数の和:1160

約数の個数: 16

約数和(自身を含む): 24723840

約数和(自身を除く): 4323103

約数列:

[1, 7, 19, 133, 157, 977, 1099, 2983, 6839, 18563, 20881, 129941, 153389, 1073723, 2914391, 20400737]

約数ペア:

[(1, 20400737), (7, 2914391), (19, 1073723), (133, 153389), (157, 129941), (977, 20881), (1099, 18563), (2983, 6839)]