20149857

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:227

約数の個数: 64

約数和(自身を含む): 37632000

約数和(自身を除く): 17482143

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 59, 63, 91, 117, 139, 177, 189, 273, 351, 413, 417, 531, 767, 819, 973, 1239, 1251, 1593, 1807, 2301, 2457, 2919, 3717, 3753, 5369, 5421, 6903, 8201, 8757, 11151, 12649, 16107, 16263, 20709, 24603, 26271, 37947, 48321, 48789, 57407, 73809, 106613, 113841, 144963, 172221, 221427, 319839, 341523, 516663, 746291, 959517, 1549989, 2238873, 2878551, 6716619, 20149857]

約数ペア:

[(1, 20149857), (3, 6716619), (7, 2878551), (9, 2238873), (13, 1549989), (21, 959517), (27, 746291), (39, 516663), (59, 341523), (63, 319839), (91, 221427), (117, 172221), (139, 144963), (177, 113841), (189, 106613), (273, 73809), (351, 57407), (413, 48789), (417, 48321), (531, 37947), (767, 26271), (819, 24603), (973, 20709), (1239, 16263), (1251, 16107), (1593, 12649), (1807, 11151), (2301, 8757), (2457, 8201), (2919, 6903), (3717, 5421), (3753, 5369)]