20771289

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:227

約数の個数: 64

約数和(自身を含む): 39137280

約数和(自身を除く): 18365991

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 97, 99, 103, 189, 231, 291, 297, 309, 679, 693, 721, 873, 927, 1067, 1133, 2037, 2079, 2163, 2619, 2781, 3201, 3399, 6111, 6489, 7469, 7931, 9603, 9991, 10197, 18333, 19467, 22407, 23793, 28809, 29973, 30591, 67221, 69937, 71379, 89919, 109901, 201663, 209811, 214137, 269757, 329703, 629433, 769307, 989109, 1888299, 2307921, 2967327, 6923763, 20771289]

約数ペア:

[(1, 20771289), (3, 6923763), (7, 2967327), (9, 2307921), (11, 1888299), (21, 989109), (27, 769307), (33, 629433), (63, 329703), (77, 269757), (97, 214137), (99, 209811), (103, 201663), (189, 109901), (231, 89919), (291, 71379), (297, 69937), (309, 67221), (679, 30591), (693, 29973), (721, 28809), (873, 23793), (927, 22407), (1067, 19467), (1133, 18333), (2037, 10197), (2079, 9991), (2163, 9603), (2619, 7931), (2781, 7469), (3201, 6489), (3399, 6111)]