20971115

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{2039}}^1$

素因数の和:2083

約数の個数: 24

約数和(自身を含む): 29302560

約数和(自身を除く): 8331445

約数列:

[1, 5, 11, 17, 55, 85, 121, 187, 605, 935, 2039, 2057, 10195, 10285, 22429, 34663, 112145, 173315, 246719, 381293, 1233595, 1906465, 4194223, 20971115]

約数ペア:

[(1, 20971115), (5, 4194223), (11, 1906465), (17, 1233595), (55, 381293), (85, 246719), (121, 173315), (187, 112145), (605, 34663), (935, 22429), (2039, 10285), (2057, 10195)]