20809345

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{1223}}^1$

素因数の和:1352

約数の個数: 16

約数和(自身を含む): 25909632

約数和(自身を除く): 5100287

約数列:

[1, 5, 41, 83, 205, 415, 1223, 3403, 6115, 17015, 50143, 101509, 250715, 507545, 4161869, 20809345]

約数ペア:

[(1, 20809345), (5, 4161869), (41, 507545), (83, 250715), (205, 101509), (415, 50143), (1223, 17015), (3403, 6115)]