21078486

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{431}}^1$

素因数の和:482

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 35530794

約数列:

[1, 2, 3, 6, 9, 11, 13, 18, 19, 22, 26, 33, 38, 39, 57, 66, 78, 99, 114, 117, 143, 171, 198, 209, 234, 247, 286, 342, 418, 429, 431, 494, 627, 741, 858, 862, 1254, 1287, 1293, 1482, 1881, 2223, 2574, 2586, 2717, 3762, 3879, 4446, 4741, 5434, 5603, 7758, 8151, 8189, 9482, 11206, 14223, 16302, 16378, 16809, 24453, 24567, 28446, 33618, 42669, 48906, 49134, 50427, 61633, 73701, 85338, 90079, 100854, 106457, 123266, 147402, 180158, 184899, 212914, 270237, 319371, 369798, 540474, 554697, 638742, 810711, 958113, 1109394, 1171027, 1621422, 1916226, 2342054, 3513081, 7026162, 10539243, 21078486]

約数ペア:

[(1, 21078486), (2, 10539243), (3, 7026162), (6, 3513081), (9, 2342054), (11, 1916226), (13, 1621422), (18, 1171027), (19, 1109394), (22, 958113), (26, 810711), (33, 638742), (38, 554697), (39, 540474), (57, 369798), (66, 319371), (78, 270237), (99, 212914), (114, 184899), (117, 180158), (143, 147402), (171, 123266), (198, 106457), (209, 100854), (234, 90079), (247, 85338), (286, 73701), (342, 61633), (418, 50427), (429, 49134), (431, 48906), (494, 42669), (627, 33618), (741, 28446), (858, 24567), (862, 24453), (1254, 16809), (1287, 16378), (1293, 16302), (1482, 14223), (1881, 11206), (2223, 9482), (2574, 8189), (2586, 8151), (2717, 7758), (3762, 5603), (3879, 5434), (4446, 4741)]