81216828

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{353}}^1$

素因数の和:464

約数の個数: 144

約数和(自身を含む): 259773696

約数和(自身を除く): 178556868

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 63, 66, 77, 83, 84, 99, 126, 132, 154, 166, 198, 231, 249, 252, 308, 332, 353, 396, 462, 498, 581, 693, 706, 747, 913, 924, 996, 1059, 1162, 1386, 1412, 1494, 1743, 1826, 2118, 2324, 2471, 2739, 2772, 2988, 3177, 3486, 3652, 3883, 4236, 4942, 5229, 5478, 6354, 6391, 6972, 7413, 7766, 8217, 9884, 10458, 10956, 11649, 12708, 12782, 14826, 15532, 16434, 19173, 20916, 22239, 23298, 25564, 27181, 29299, 29652, 32868, 34947, 38346, 44478, 46596, 54362, 57519, 58598, 69894, 76692, 81543, 87897, 88956, 108724, 115038, 117196, 139788, 163086, 175794, 205093, 230076, 244629, 263691, 322289, 326172, 351588, 410186, 489258, 527382, 615279, 644578, 820372, 966867, 978516, 1054764, 1230558, 1289156, 1845837, 1933734, 2256023, 2461116, 2900601, 3691674, 3867468, 4512046, 5801202, 6768069, 7383348, 9024092, 11602404, 13536138, 20304207, 27072276, 40608414, 81216828]

約数ペア:

[(1, 81216828), (2, 40608414), (3, 27072276), (4, 20304207), (6, 13536138), (7, 11602404), (9, 9024092), (11, 7383348), (12, 6768069), (14, 5801202), (18, 4512046), (21, 3867468), (22, 3691674), (28, 2900601), (33, 2461116), (36, 2256023), (42, 1933734), (44, 1845837), (63, 1289156), (66, 1230558), (77, 1054764), (83, 978516), (84, 966867), (99, 820372), (126, 644578), (132, 615279), (154, 527382), (166, 489258), (198, 410186), (231, 351588), (249, 326172), (252, 322289), (308, 263691), (332, 244629), (353, 230076), (396, 205093), (462, 175794), (498, 163086), (581, 139788), (693, 117196), (706, 115038), (747, 108724), (913, 88956), (924, 87897), (996, 81543), (1059, 76692), (1162, 69894), (1386, 58598), (1412, 57519), (1494, 54362), (1743, 46596), (1826, 44478), (2118, 38346), (2324, 34947), (2471, 32868), (2739, 29652), (2772, 29299), (2988, 27181), (3177, 25564), (3486, 23298), (3652, 22239), (3883, 20916), (4236, 19173), (4942, 16434), (5229, 15532), (5478, 14826), (6354, 12782), (6391, 12708), (6972, 11649), (7413, 10956), (7766, 10458), (8217, 9884)]