20688525819

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{389}}^1\times {\mathrm{2971}}^1$

素因数の和:3402

約数の個数: 80

約数和(自身を含む): 35342667360

約数和(自身を除く): 14654141541

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 81, 117, 153, 221, 351, 389, 459, 663, 1053, 1167, 1377, 1989, 2971, 3501, 5057, 5967, 6613, 8913, 10503, 15171, 17901, 19839, 26739, 31509, 38623, 45513, 50507, 59517, 80217, 85969, 115869, 136539, 151521, 178551, 240651, 257907, 347607, 409617, 454563, 535653, 656591, 773721, 1042821, 1155719, 1363689, 1969773, 2321163, 3128463, 3467157, 4091067, 5909319, 6963489, 10401471, 15024347, 17727957, 19647223, 31204413, 45073041, 53183871, 58941669, 93613239, 135219123, 176825007, 255413899, 405657369, 530475021, 766241697, 1216972107, 1591425063, 2298725091, 6896175273, 20688525819]

約数ペア:

[(1, 20688525819), (3, 6896175273), (9, 2298725091), (13, 1591425063), (17, 1216972107), (27, 766241697), (39, 530475021), (51, 405657369), (81, 255413899), (117, 176825007), (153, 135219123), (221, 93613239), (351, 58941669), (389, 53183871), (459, 45073041), (663, 31204413), (1053, 19647223), (1167, 17727957), (1377, 15024347), (1989, 10401471), (2971, 6963489), (3501, 5909319), (5057, 4091067), (5967, 3467157), (6613, 3128463), (8913, 2321163), (10503, 1969773), (15171, 1363689), (17901, 1155719), (19839, 1042821), (26739, 773721), (31509, 656591), (38623, 535653), (45513, 454563), (50507, 409617), (59517, 347607), (80217, 257907), (85969, 240651), (115869, 178551), (136539, 151521)]