20509489

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2927}}^1$

素因数の和:2965

約数の個数: 24

約数和(自身を含む): 28038528

約数和(自身を除く): 7529039

約数列:

[1, 7, 11, 13, 49, 77, 91, 143, 539, 637, 1001, 2927, 7007, 20489, 32197, 38051, 143423, 225379, 266357, 418561, 1577653, 1864499, 2929927, 20509489]

約数ペア:

[(1, 20509489), (7, 2929927), (11, 1864499), (13, 1577653), (49, 418561), (77, 266357), (91, 225379), (143, 143423), (539, 38051), (637, 32197), (1001, 20489), (2927, 7007)]