28881385

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{443}}^1$

素因数の和:537

約数の個数: 32

約数和(自身を含む): 40279680

約数和(自身を除く): 11398295

約数列:

[1, 5, 13, 17, 59, 65, 85, 221, 295, 443, 767, 1003, 1105, 2215, 3835, 5015, 5759, 7531, 13039, 26137, 28795, 37655, 65195, 97903, 130685, 339781, 444329, 489515, 1698905, 2221645, 5776277, 28881385]

約数ペア:

[(1, 28881385), (5, 5776277), (13, 2221645), (17, 1698905), (59, 489515), (65, 444329), (85, 339781), (221, 130685), (295, 97903), (443, 65195), (767, 37655), (1003, 28795), (1105, 26137), (2215, 13039), (3835, 7531), (5015, 5759)]