20781567382014

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{647}}^1\times {\mathrm{41498563}}^1$

素因数の和:41499261

約数の個数: 48

約数和(自身を含む): 46145075213952

約数和(自身を除く): 25363507831938

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 258, 387, 647, 774, 1294, 1941, 3882, 5823, 11646, 27821, 55642, 83463, 166926, 250389, 500778, 41498563, 82997126, 124495689, 248991378, 373487067, 746974134, 1784438209, 3568876418, 5353314627, 10706629254, 16059943881, 26849570261, 32119887762, 53699140522, 80548710783, 161097421566, 241646132349, 483292264698, 1154531521223, 2309063042446, 3463594563669, 6927189127338, 10390783691007, 20781567382014]

約数ペア:

[(1, 20781567382014), (2, 10390783691007), (3, 6927189127338), (6, 3463594563669), (9, 2309063042446), (18, 1154531521223), (43, 483292264698), (86, 241646132349), (129, 161097421566), (258, 80548710783), (387, 53699140522), (647, 32119887762), (774, 26849570261), (1294, 16059943881), (1941, 10706629254), (3882, 5353314627), (5823, 3568876418), (11646, 1784438209), (27821, 746974134), (55642, 373487067), (83463, 248991378), (166926, 124495689), (250389, 82997126), (500778, 41498563)]