20512690569

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{242441}}^1$

素因数の和:242550

約数の個数: 48

約数和(自身を含む): 36308113920

約数和(自身を除く): 15795423351

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 79, 119, 153, 237, 357, 553, 711, 1071, 1343, 1659, 4029, 4977, 9401, 12087, 28203, 84609, 242441, 727323, 1697087, 2181969, 4121497, 5091261, 12364491, 15273783, 19152839, 28850479, 37093473, 57458517, 86551437, 134069873, 172375551, 259654311, 325598263, 402209619, 976794789, 1206628857, 2279187841, 2930384367, 6837563523, 20512690569]

約数ペア:

[(1, 20512690569), (3, 6837563523), (7, 2930384367), (9, 2279187841), (17, 1206628857), (21, 976794789), (51, 402209619), (63, 325598263), (79, 259654311), (119, 172375551), (153, 134069873), (237, 86551437), (357, 57458517), (553, 37093473), (711, 28850479), (1071, 19152839), (1343, 15273783), (1659, 12364491), (4029, 5091261), (4977, 4121497), (9401, 2181969), (12087, 1697087), (28203, 727323), (84609, 242441)]