20343141

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{421}}^1$

素因数の和:506

約数の個数: 48

約数和(自身を含む): 36865920

約数和(自身を除く): 16522779

約数列:

[1, 3, 7, 9, 13, 21, 39, 59, 63, 91, 117, 177, 273, 413, 421, 531, 767, 819, 1239, 1263, 2301, 2947, 3717, 3789, 5369, 5473, 6903, 8841, 16107, 16419, 24839, 26523, 38311, 48321, 49257, 74517, 114933, 173873, 223551, 322907, 344799, 521619, 968721, 1564857, 2260349, 2906163, 6781047, 20343141]

約数ペア:

[(1, 20343141), (3, 6781047), (7, 2906163), (9, 2260349), (13, 1564857), (21, 968721), (39, 521619), (59, 344799), (63, 322907), (91, 223551), (117, 173873), (177, 114933), (273, 74517), (413, 49257), (421, 48321), (531, 38311), (767, 26523), (819, 24839), (1239, 16419), (1263, 16107), (2301, 8841), (2947, 6903), (3717, 5473), (3789, 5369)]