20512406061

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{51461}}^1$

素因数の和:51536

約数の個数: 80

約数和(自身を含む): 37859564160

約数和(自身を除く): 17347158099

約数列:

[1, 3, 7, 9, 19, 21, 27, 37, 57, 63, 81, 111, 133, 171, 189, 259, 333, 399, 513, 567, 703, 777, 999, 1197, 1539, 2109, 2331, 2997, 3591, 4921, 6327, 6993, 10773, 14763, 18981, 20979, 44289, 51461, 56943, 132867, 154383, 360227, 398601, 463149, 977759, 1080681, 1389447, 1904057, 2933277, 3242043, 4168341, 5712171, 6844313, 8799831, 9726129, 13328399, 17136513, 20532939, 26399493, 29178387, 36177083, 39985197, 51409539, 61598817, 79198479, 108531249, 119955591, 154228617, 184796451, 253239581, 325593747, 359866773, 554389353, 759718743, 976781241, 1079600319, 2279156229, 2930343723, 6837468687, 20512406061]

約数ペア:

[(1, 20512406061), (3, 6837468687), (7, 2930343723), (9, 2279156229), (19, 1079600319), (21, 976781241), (27, 759718743), (37, 554389353), (57, 359866773), (63, 325593747), (81, 253239581), (111, 184796451), (133, 154228617), (171, 119955591), (189, 108531249), (259, 79198479), (333, 61598817), (399, 51409539), (513, 39985197), (567, 36177083), (703, 29178387), (777, 26399493), (999, 20532939), (1197, 17136513), (1539, 13328399), (2109, 9726129), (2331, 8799831), (2997, 6844313), (3591, 5712171), (4921, 4168341), (6327, 3242043), (6993, 2933277), (10773, 1904057), (14763, 1389447), (18981, 1080681), (20979, 977759), (44289, 463149), (51461, 398601), (56943, 360227), (132867, 154383)]