20781185124

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{290711}}^1$

素因数の和:290785

約数の個数: 96

約数和(自身を含む): 59388973056

約数和(自身を除く): 38607787932

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 23, 28, 37, 42, 46, 69, 74, 84, 92, 111, 138, 148, 161, 222, 259, 276, 322, 444, 483, 518, 644, 777, 851, 966, 1036, 1554, 1702, 1932, 2553, 3108, 3404, 5106, 5957, 10212, 11914, 17871, 23828, 35742, 71484, 290711, 581422, 872133, 1162844, 1744266, 2034977, 3488532, 4069954, 6104931, 6686353, 8139908, 10756307, 12209862, 13372706, 20059059, 21512614, 24419724, 26745412, 32268921, 40118118, 43025228, 46804471, 64537842, 75294149, 80236236, 93608942, 129075684, 140413413, 150588298, 187217884, 225882447, 247395061, 280826826, 301176596, 451764894, 494790122, 561653652, 742185183, 903529788, 989580244, 1484370366, 1731765427, 2968740732, 3463530854, 5195296281, 6927061708, 10390592562, 20781185124]

約数ペア:

[(1, 20781185124), (2, 10390592562), (3, 6927061708), (4, 5195296281), (6, 3463530854), (7, 2968740732), (12, 1731765427), (14, 1484370366), (21, 989580244), (23, 903529788), (28, 742185183), (37, 561653652), (42, 494790122), (46, 451764894), (69, 301176596), (74, 280826826), (84, 247395061), (92, 225882447), (111, 187217884), (138, 150588298), (148, 140413413), (161, 129075684), (222, 93608942), (259, 80236236), (276, 75294149), (322, 64537842), (444, 46804471), (483, 43025228), (518, 40118118), (644, 32268921), (777, 26745412), (851, 24419724), (966, 21512614), (1036, 20059059), (1554, 13372706), (1702, 12209862), (1932, 10756307), (2553, 8139908), (3108, 6686353), (3404, 6104931), (5106, 4069954), (5957, 3488532), (10212, 2034977), (11914, 1744266), (17871, 1162844), (23828, 872133), (35742, 581422), (71484, 290711)]