20644085

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^2$

素因数の和:138

約数の個数: 48

約数和(自身を含む): 32711040

約数和(自身を除く): 12066955

約数列:

[1, 5, 7, 11, 29, 35, 43, 55, 77, 145, 203, 215, 301, 319, 385, 473, 1015, 1247, 1505, 1595, 1849, 2233, 2365, 3311, 6235, 8729, 9245, 11165, 12943, 13717, 16555, 20339, 43645, 53621, 64715, 68585, 96019, 101695, 142373, 268105, 375347, 480095, 589831, 711865, 1876735, 2949155, 4128817, 20644085]

約数ペア:

[(1, 20644085), (5, 4128817), (7, 2949155), (11, 1876735), (29, 711865), (35, 589831), (43, 480095), (55, 375347), (77, 268105), (145, 142373), (203, 101695), (215, 96019), (301, 68585), (319, 64715), (385, 53621), (473, 43645), (1015, 20339), (1247, 16555), (1505, 13717), (1595, 12943), (1849, 11165), (2233, 9245), (2365, 8729), (3311, 6235)]