21256576

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{487}}^1$

素因数の和:543

約数の個数: 64

約数和(自身を含む): 47784960

約数和(自身を除く): 26528384

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 32, 44, 62, 64, 88, 124, 128, 176, 248, 341, 352, 487, 496, 682, 704, 974, 992, 1364, 1408, 1948, 1984, 2728, 3896, 3968, 5357, 5456, 7792, 10714, 10912, 15097, 15584, 21428, 21824, 30194, 31168, 42856, 43648, 60388, 62336, 85712, 120776, 166067, 171424, 241552, 332134, 342848, 483104, 664268, 685696, 966208, 1328536, 1932416, 2657072, 5314144, 10628288, 21256576]

約数ペア:

[(1, 21256576), (2, 10628288), (4, 5314144), (8, 2657072), (11, 1932416), (16, 1328536), (22, 966208), (31, 685696), (32, 664268), (44, 483104), (62, 342848), (64, 332134), (88, 241552), (124, 171424), (128, 166067), (176, 120776), (248, 85712), (341, 62336), (352, 60388), (487, 43648), (496, 42856), (682, 31168), (704, 30194), (974, 21824), (992, 21428), (1364, 15584), (1408, 15097), (1948, 10912), (1984, 10714), (2728, 7792), (3896, 5456), (3968, 5357)]