81050905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{503}}^1$

素因数の和:625

約数の個数: 32

約数和(自身を含む): 109396224

約数和(自身を除く): 28345319

約数列:

[1, 5, 13, 37, 65, 67, 185, 335, 481, 503, 871, 2405, 2479, 2515, 4355, 6539, 12395, 18611, 32227, 32695, 33701, 93055, 161135, 168505, 241943, 438113, 1209715, 1246937, 2190565, 6234685, 16210181, 81050905]

約数ペア:

[(1, 81050905), (5, 16210181), (13, 6234685), (37, 2190565), (65, 1246937), (67, 1209715), (185, 438113), (335, 241943), (481, 168505), (503, 161135), (871, 93055), (2405, 33701), (2479, 32695), (2515, 32227), (4355, 18611), (6539, 12395)]