20405495

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{9049}}^1$

素因数の和:9106

約数の個数: 16

約数和(自身を含む): 27367200

約数和(自身を除く): 6961705

約数列:

[1, 5, 11, 41, 55, 205, 451, 2255, 9049, 45245, 99539, 371009, 497695, 1855045, 4081099, 20405495]

約数ペア:

[(1, 20405495), (5, 4081099), (11, 1855045), (41, 497695), (55, 371009), (205, 99539), (451, 45245), (2255, 9049)]