20489216

素因数分解:

$2^{10}\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1$

素因数の和:155

約数の個数: 88

約数和(自身を含む): 47752416

約数和(自身を除く): 27263200

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 32, 34, 44, 64, 68, 88, 107, 128, 136, 176, 187, 214, 256, 272, 352, 374, 428, 512, 544, 704, 748, 856, 1024, 1088, 1177, 1408, 1496, 1712, 1819, 2176, 2354, 2816, 2992, 3424, 3638, 4352, 4708, 5632, 5984, 6848, 7276, 8704, 9416, 11264, 11968, 13696, 14552, 17408, 18832, 20009, 23936, 27392, 29104, 37664, 40018, 47872, 54784, 58208, 75328, 80036, 95744, 109568, 116416, 150656, 160072, 191488, 232832, 301312, 320144, 465664, 602624, 640288, 931328, 1205248, 1280576, 1862656, 2561152, 5122304, 10244608, 20489216]

約数ペア:

[(1, 20489216), (2, 10244608), (4, 5122304), (8, 2561152), (11, 1862656), (16, 1280576), (17, 1205248), (22, 931328), (32, 640288), (34, 602624), (44, 465664), (64, 320144), (68, 301312), (88, 232832), (107, 191488), (128, 160072), (136, 150656), (176, 116416), (187, 109568), (214, 95744), (256, 80036), (272, 75328), (352, 58208), (374, 54784), (428, 47872), (512, 40018), (544, 37664), (704, 29104), (748, 27392), (856, 23936), (1024, 20009), (1088, 18832), (1177, 17408), (1408, 14552), (1496, 13696), (1712, 11968), (1819, 11264), (2176, 9416), (2354, 8704), (2816, 7276), (2992, 6848), (3424, 5984), (3638, 5632), (4352, 4708)]