20556963

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4729}}^1$

素因数の和:4768

約数の個数: 32

約数和(自身を含む): 36326400

約数和(自身を除く): 15769437

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 161, 189, 207, 483, 621, 1449, 4347, 4729, 14187, 33103, 42561, 99309, 108767, 127683, 297927, 326301, 761369, 893781, 978903, 2284107, 2936709, 6852321, 20556963]

約数ペア:

[(1, 20556963), (3, 6852321), (7, 2936709), (9, 2284107), (21, 978903), (23, 893781), (27, 761369), (63, 326301), (69, 297927), (161, 127683), (189, 108767), (207, 99309), (483, 42561), (621, 33103), (1449, 14187), (4347, 4729)]