20559861

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{2027}}^1$

素因数の和:2070

約数の個数: 36

約数和(自身を含む): 36065952

約数和(自身を除く): 15506091

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 147, 161, 207, 441, 483, 1127, 1449, 2027, 3381, 6081, 10143, 14189, 18243, 42567, 46621, 99323, 127701, 139863, 297969, 326347, 419589, 893907, 979041, 2284429, 2937123, 6853287, 20559861]

約数ペア:

[(1, 20559861), (3, 6853287), (7, 2937123), (9, 2284429), (21, 979041), (23, 893907), (49, 419589), (63, 326347), (69, 297969), (147, 139863), (161, 127701), (207, 99323), (441, 46621), (483, 42567), (1127, 18243), (1449, 14189), (2027, 10143), (3381, 6081)]