20826

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1$

素因数の和:110

約数の個数: 24

約数和(自身を含む): 49140

約数和(自身を除く): 28314

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 89, 117, 178, 234, 267, 534, 801, 1157, 1602, 2314, 3471, 6942, 10413, 20826]

約数ペア:

[(1, 20826), (2, 10413), (3, 6942), (6, 3471), (9, 2314), (13, 1602), (18, 1157), (26, 801), (39, 534), (78, 267), (89, 234), (117, 178)]