21021984

素因数分解:

$2^5\times 3^3\times {\mathrm{29}}^1\times {\mathrm{839}}^1$

素因数の和:887

約数の個数: 96

約数和(自身を含む): 63504000

約数和(自身を除く): 42482016

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 29, 32, 36, 48, 54, 58, 72, 87, 96, 108, 116, 144, 174, 216, 232, 261, 288, 348, 432, 464, 522, 696, 783, 839, 864, 928, 1044, 1392, 1566, 1678, 2088, 2517, 2784, 3132, 3356, 4176, 5034, 6264, 6712, 7551, 8352, 10068, 12528, 13424, 15102, 20136, 22653, 24331, 25056, 26848, 30204, 40272, 45306, 48662, 60408, 72993, 80544, 90612, 97324, 120816, 145986, 181224, 194648, 218979, 241632, 291972, 362448, 389296, 437958, 583944, 656937, 724896, 778592, 875916, 1167888, 1313874, 1751832, 2335776, 2627748, 3503664, 5255496, 7007328, 10510992, 21021984]

約数ペア:

[(1, 21021984), (2, 10510992), (3, 7007328), (4, 5255496), (6, 3503664), (8, 2627748), (9, 2335776), (12, 1751832), (16, 1313874), (18, 1167888), (24, 875916), (27, 778592), (29, 724896), (32, 656937), (36, 583944), (48, 437958), (54, 389296), (58, 362448), (72, 291972), (87, 241632), (96, 218979), (108, 194648), (116, 181224), (144, 145986), (174, 120816), (216, 97324), (232, 90612), (261, 80544), (288, 72993), (348, 60408), (432, 48662), (464, 45306), (522, 40272), (696, 30204), (783, 26848), (839, 25056), (864, 24331), (928, 22653), (1044, 20136), (1392, 15102), (1566, 13424), (1678, 12528), (2088, 10068), (2517, 8352), (2784, 7551), (3132, 6712), (3356, 6264), (4176, 5034)]