20726181

素因数分解:

$3^2\times 7^1\times {\mathrm{269}}^1\times {\mathrm{1223}}^1$

素因数の和:1505

約数の個数: 24

約数和(自身を含む): 34369920

約数和(自身を除く): 13643739

約数列:

[1, 3, 7, 9, 21, 63, 269, 807, 1223, 1883, 2421, 3669, 5649, 8561, 11007, 16947, 25683, 77049, 328987, 986961, 2302909, 2960883, 6908727, 20726181]

約数ペア:

[(1, 20726181), (3, 6908727), (7, 2960883), (9, 2302909), (21, 986961), (63, 328987), (269, 77049), (807, 25683), (1223, 16947), (1883, 11007), (2421, 8561), (3669, 5649)]