81840055

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{8221}}^1$

素因数の和:8418

約数の個数: 16

約数和(自身を含む): 107741088

約数和(自身を除く): 25901033

約数列:

[1, 5, 11, 55, 181, 905, 1991, 8221, 9955, 41105, 90431, 452155, 1488001, 7440005, 16368011, 81840055]

約数ペア:

[(1, 81840055), (5, 16368011), (11, 7440005), (55, 1488001), (181, 452155), (905, 90431), (1991, 41105), (8221, 9955)]