20797497

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{463}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 37060608

約数和(自身を除く): 16263111

約数列:

[1, 3, 7, 9, 21, 23, 31, 63, 69, 93, 161, 207, 217, 279, 463, 483, 651, 713, 1389, 1449, 1953, 2139, 3241, 4167, 4991, 6417, 9723, 10649, 14353, 14973, 29169, 31947, 43059, 44919, 74543, 95841, 100471, 129177, 223629, 301413, 330119, 670887, 904239, 990357, 2310833, 2971071, 6932499, 20797497]

約数ペア:

[(1, 20797497), (3, 6932499), (7, 2971071), (9, 2310833), (21, 990357), (23, 904239), (31, 670887), (63, 330119), (69, 301413), (93, 223629), (161, 129177), (207, 100471), (217, 95841), (279, 74543), (463, 44919), (483, 43059), (651, 31947), (713, 29169), (1389, 14973), (1449, 14353), (1953, 10649), (2139, 9723), (3241, 6417), (4167, 4991)]