20919085

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{487}}^1$

素因数の和:585

約数の個数: 24

約数和(自身を含む): 28038528

約数和(自身を除く): 7119443

約数列:

[1, 5, 11, 55, 71, 121, 355, 487, 605, 781, 2435, 3905, 5357, 8591, 26785, 34577, 42955, 58927, 172885, 294635, 380347, 1901735, 4183817, 20919085]

約数ペア:

[(1, 20919085), (5, 4183817), (11, 1901735), (55, 380347), (71, 294635), (121, 172885), (355, 58927), (487, 42955), (605, 34577), (781, 26785), (2435, 8591), (3905, 5357)]