20659365

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{331}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 38326080

約数和(自身を除く): 17666715

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 73, 95, 171, 219, 285, 331, 365, 657, 855, 993, 1095, 1387, 1655, 2979, 3285, 4161, 4965, 6289, 6935, 12483, 14895, 18867, 20805, 24163, 31445, 56601, 62415, 72489, 94335, 120815, 217467, 283005, 362445, 459097, 1087335, 1377291, 2295485, 4131873, 6886455, 20659365]

約数ペア:

[(1, 20659365), (3, 6886455), (5, 4131873), (9, 2295485), (15, 1377291), (19, 1087335), (45, 459097), (57, 362445), (73, 283005), (95, 217467), (171, 120815), (219, 94335), (285, 72489), (331, 62415), (365, 56601), (657, 31445), (855, 24163), (993, 20805), (1095, 18867), (1387, 14895), (1655, 12483), (2979, 6935), (3285, 6289), (4161, 4965)]