21054976

素因数分解:

$2^9\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:135

約数の個数: 80

約数和(自身を含む): 46403280

約数和(自身を除く): 25348304

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 41, 59, 64, 68, 82, 118, 128, 136, 164, 236, 256, 272, 328, 472, 512, 544, 656, 697, 944, 1003, 1088, 1312, 1394, 1888, 2006, 2176, 2419, 2624, 2788, 3776, 4012, 4352, 4838, 5248, 5576, 7552, 8024, 8704, 9676, 10496, 11152, 15104, 16048, 19352, 20992, 22304, 30208, 32096, 38704, 41123, 44608, 64192, 77408, 82246, 89216, 128384, 154816, 164492, 178432, 256768, 309632, 328984, 356864, 513536, 619264, 657968, 1238528, 1315936, 2631872, 5263744, 10527488, 21054976]

約数ペア:

[(1, 21054976), (2, 10527488), (4, 5263744), (8, 2631872), (16, 1315936), (17, 1238528), (32, 657968), (34, 619264), (41, 513536), (59, 356864), (64, 328984), (68, 309632), (82, 256768), (118, 178432), (128, 164492), (136, 154816), (164, 128384), (236, 89216), (256, 82246), (272, 77408), (328, 64192), (472, 44608), (512, 41123), (544, 38704), (656, 32096), (697, 30208), (944, 22304), (1003, 20992), (1088, 19352), (1312, 16048), (1394, 15104), (1888, 11152), (2006, 10496), (2176, 9676), (2419, 8704), (2624, 8024), (2788, 7552), (3776, 5576), (4012, 5248), (4352, 4838)]