20685159

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{271}}^1$

素因数の和:548

約数の個数: 32

約数和(自身を含む): 33684480

約数和(自身を除く): 12999321

約数列:

[1, 3, 9, 11, 27, 33, 99, 257, 271, 297, 771, 813, 2313, 2439, 2827, 2981, 6939, 7317, 8481, 8943, 25443, 26829, 69647, 76329, 80487, 208941, 626823, 766117, 1880469, 2298351, 6895053, 20685159]

約数ペア:

[(1, 20685159), (3, 6895053), (9, 2298351), (11, 1880469), (27, 766117), (33, 626823), (99, 208941), (257, 80487), (271, 76329), (297, 69647), (771, 26829), (813, 25443), (2313, 8943), (2439, 8481), (2827, 7317), (2981, 6939)]