20395179

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^2$

素因数の和:165

約数の個数: 48

約数和(自身を含む): 36259840

約数和(自身を除く): 15864661

約数列:

[1, 3, 7, 9, 21, 27, 31, 59, 63, 93, 177, 189, 217, 279, 413, 531, 651, 837, 1239, 1593, 1829, 1953, 3481, 3717, 5487, 5859, 10443, 11151, 12803, 16461, 24367, 31329, 38409, 49383, 73101, 93987, 107911, 115227, 219303, 323733, 345681, 657909, 755377, 971199, 2266131, 2913597, 6798393, 20395179]

約数ペア:

[(1, 20395179), (3, 6798393), (7, 2913597), (9, 2266131), (21, 971199), (27, 755377), (31, 657909), (59, 345681), (63, 323733), (93, 219303), (177, 115227), (189, 107911), (217, 93987), (279, 73101), (413, 49383), (531, 38409), (651, 31329), (837, 24367), (1239, 16461), (1593, 12803), (1829, 11151), (1953, 10443), (3481, 5859), (3717, 5487)]