47128221

素因数分解:

$3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{6863}}^1$

素因数の和:6985

約数の個数: 24

約数和(自身を含む): 78524160

約数和(自身を除く): 31395939

約数列:

[1, 3, 7, 9, 21, 63, 109, 327, 763, 981, 2289, 6863, 6867, 20589, 48041, 61767, 144123, 432369, 748067, 2244201, 5236469, 6732603, 15709407, 47128221]

約数ペア:

[(1, 47128221), (3, 15709407), (7, 6732603), (9, 5236469), (21, 2244201), (63, 748067), (109, 432369), (327, 144123), (763, 61767), (981, 48041), (2289, 20589), (6863, 6867)]