257342540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{141397}}^1$

素因数の和:141426

約数の個数: 48

約数和(自身を含む): 665136192

約数和(自身を除く): 407793652

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 141397, 282794, 565588, 706985, 989779, 1413970, 1838161, 1979558, 2827940, 3676322, 3959116, 4948895, 7352644, 9190805, 9897790, 12867127, 18381610, 19795580, 25734254, 36763220, 51468508, 64335635, 128671270, 257342540]

約数ペア:

[(1, 257342540), (2, 128671270), (4, 64335635), (5, 51468508), (7, 36763220), (10, 25734254), (13, 19795580), (14, 18381610), (20, 12867127), (26, 9897790), (28, 9190805), (35, 7352644), (52, 4948895), (65, 3959116), (70, 3676322), (91, 2827940), (130, 1979558), (140, 1838161), (182, 1413970), (260, 989779), (364, 706985), (455, 565588), (910, 282794), (1820, 141397)]