20154722075

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{6911}}^1$

素因数の和:7076

約数の個数: 48

約数和(自身を含む): 26658865152

約数和(自身を除く): 6504143077

約数列:

[1, 5, 25, 31, 53, 71, 155, 265, 355, 775, 1325, 1643, 1775, 2201, 3763, 6911, 8215, 11005, 18815, 34555, 41075, 55025, 94075, 116653, 172775, 214241, 366283, 490681, 583265, 1071205, 1831415, 2453405, 2916325, 5356025, 9157075, 11354773, 12267025, 15211111, 26006093, 56773865, 76055555, 130030465, 283869325, 380277775, 650152325, 806188883, 4030944415, 20154722075]

約数ペア:

[(1, 20154722075), (5, 4030944415), (25, 806188883), (31, 650152325), (53, 380277775), (71, 283869325), (155, 130030465), (265, 76055555), (355, 56773865), (775, 26006093), (1325, 15211111), (1643, 12267025), (1775, 11354773), (2201, 9157075), (3763, 5356025), (6911, 2916325), (8215, 2453405), (11005, 1831415), (18815, 1071205), (34555, 583265), (41075, 490681), (55025, 366283), (94075, 214241), (116653, 172775)]