21031936

素因数分解:

$2^{10}\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:109

約数の個数: 88

約数和(自身を含む): 47162880

約数和(自身を除く): 26130944

約数列:

[1, 2, 4, 8, 16, 19, 23, 32, 38, 46, 47, 64, 76, 92, 94, 128, 152, 184, 188, 256, 304, 368, 376, 437, 512, 608, 736, 752, 874, 893, 1024, 1081, 1216, 1472, 1504, 1748, 1786, 2162, 2432, 2944, 3008, 3496, 3572, 4324, 4864, 5888, 6016, 6992, 7144, 8648, 9728, 11776, 12032, 13984, 14288, 17296, 19456, 20539, 23552, 24064, 27968, 28576, 34592, 41078, 48128, 55936, 57152, 69184, 82156, 111872, 114304, 138368, 164312, 223744, 228608, 276736, 328624, 447488, 457216, 553472, 657248, 914432, 1106944, 1314496, 2628992, 5257984, 10515968, 21031936]

約数ペア:

[(1, 21031936), (2, 10515968), (4, 5257984), (8, 2628992), (16, 1314496), (19, 1106944), (23, 914432), (32, 657248), (38, 553472), (46, 457216), (47, 447488), (64, 328624), (76, 276736), (92, 228608), (94, 223744), (128, 164312), (152, 138368), (184, 114304), (188, 111872), (256, 82156), (304, 69184), (368, 57152), (376, 55936), (437, 48128), (512, 41078), (608, 34592), (736, 28576), (752, 27968), (874, 24064), (893, 23552), (1024, 20539), (1081, 19456), (1216, 17296), (1472, 14288), (1504, 13984), (1748, 12032), (1786, 11776), (2162, 9728), (2432, 8648), (2944, 7144), (3008, 6992), (3496, 6016), (3572, 5888), (4324, 4864)]