20387745

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{1097}}^1$

素因数の和:1174

約数の個数: 48

約数和(自身を含む): 41109120

約数和(自身を除く): 20721375

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 59, 63, 105, 177, 295, 315, 413, 531, 885, 1097, 1239, 2065, 2655, 3291, 3717, 5485, 6195, 7679, 9873, 16455, 18585, 23037, 38395, 49365, 64723, 69111, 115185, 194169, 323615, 345555, 453061, 582507, 970845, 1359183, 2265305, 2912535, 4077549, 6795915, 20387745]

約数ペア:

[(1, 20387745), (3, 6795915), (5, 4077549), (7, 2912535), (9, 2265305), (15, 1359183), (21, 970845), (35, 582507), (45, 453061), (59, 345555), (63, 323615), (105, 194169), (177, 115185), (295, 69111), (315, 64723), (413, 49365), (531, 38395), (885, 23037), (1097, 18585), (1239, 16455), (2065, 9873), (2655, 7679), (3291, 6195), (3717, 5485)]