20809306504

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1\times {\mathrm{12491}}^1$

素因数の和:12994

約数の個数: 64

約数和(自身を含む): 45330969600

約数和(自身を除く): 24521663096

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 419, 497, 568, 838, 994, 1676, 1988, 2933, 3352, 3976, 5866, 11732, 12491, 23464, 24982, 29749, 49964, 59498, 87437, 99928, 118996, 174874, 208243, 237992, 349748, 416486, 699496, 832972, 886861, 1665944, 1773722, 3547444, 5233729, 6208027, 7094888, 10467458, 12416054, 20934916, 24832108, 36636103, 41869832, 49664216, 73272206, 146544412, 293088824, 371594759, 743189518, 1486379036, 2601163313, 2972758072, 5202326626, 10404653252, 20809306504]

約数ペア:

[(1, 20809306504), (2, 10404653252), (4, 5202326626), (7, 2972758072), (8, 2601163313), (14, 1486379036), (28, 743189518), (56, 371594759), (71, 293088824), (142, 146544412), (284, 73272206), (419, 49664216), (497, 41869832), (568, 36636103), (838, 24832108), (994, 20934916), (1676, 12416054), (1988, 10467458), (2933, 7094888), (3352, 6208027), (3976, 5233729), (5866, 3547444), (11732, 1773722), (12491, 1665944), (23464, 886861), (24982, 832972), (29749, 699496), (49964, 416486), (59498, 349748), (87437, 237992), (99928, 208243), (118996, 174874)]