20647818

素因数分解:

$2^1\times 3^3\times {\mathrm{137}}^1\times {\mathrm{2791}}^1$

素因数の和:2939

約数の個数: 32

約数和(自身を含む): 46235520

約数和(自身を除く): 25587702

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 137, 274, 411, 822, 1233, 2466, 2791, 3699, 5582, 7398, 8373, 16746, 25119, 50238, 75357, 150714, 382367, 764734, 1147101, 2294202, 3441303, 6882606, 10323909, 20647818]

約数ペア:

[(1, 20647818), (2, 10323909), (3, 6882606), (6, 3441303), (9, 2294202), (18, 1147101), (27, 764734), (54, 382367), (137, 150714), (274, 75357), (411, 50238), (822, 25119), (1233, 16746), (2466, 8373), (2791, 7398), (3699, 5582)]