20585271

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{307}}^1$

素因数の和:451

約数の個数: 32

約数和(自身を含む): 32800768

約数和(自身を除く): 12215497

約数列:

[1, 3, 7, 21, 31, 93, 103, 217, 307, 309, 651, 721, 921, 2149, 2163, 3193, 6447, 9517, 9579, 22351, 28551, 31621, 66619, 67053, 94863, 199857, 221347, 664041, 980251, 2940753, 6861757, 20585271]

約数ペア:

[(1, 20585271), (3, 6861757), (7, 2940753), (21, 980251), (31, 664041), (93, 221347), (103, 199857), (217, 94863), (307, 67053), (309, 66619), (651, 31621), (721, 28551), (921, 22351), (2149, 9579), (2163, 9517), (3193, 6447)]