19976768

素因数分解:

$2^6\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:140

約数の個数: 112

約数和(自身を含む): 49889664

約数和(自身を除く): 29912896

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 43, 56, 61, 64, 68, 86, 112, 119, 122, 136, 172, 224, 238, 244, 272, 301, 344, 427, 448, 476, 488, 544, 602, 688, 731, 854, 952, 976, 1037, 1088, 1204, 1376, 1462, 1708, 1904, 1952, 2074, 2408, 2623, 2752, 2924, 3416, 3808, 3904, 4148, 4816, 5117, 5246, 5848, 6832, 7259, 7616, 8296, 9632, 10234, 10492, 11696, 13664, 14518, 16592, 18361, 19264, 20468, 20984, 23392, 27328, 29036, 33184, 36722, 40936, 41968, 44591, 46784, 58072, 66368, 73444, 81872, 83936, 89182, 116144, 146888, 163744, 167872, 178364, 232288, 293776, 312137, 327488, 356728, 464576, 587552, 624274, 713456, 1175104, 1248548, 1426912, 2497096, 2853824, 4994192, 9988384, 19976768]

約数ペア:

[(1, 19976768), (2, 9988384), (4, 4994192), (7, 2853824), (8, 2497096), (14, 1426912), (16, 1248548), (17, 1175104), (28, 713456), (32, 624274), (34, 587552), (43, 464576), (56, 356728), (61, 327488), (64, 312137), (68, 293776), (86, 232288), (112, 178364), (119, 167872), (122, 163744), (136, 146888), (172, 116144), (224, 89182), (238, 83936), (244, 81872), (272, 73444), (301, 66368), (344, 58072), (427, 46784), (448, 44591), (476, 41968), (488, 40936), (544, 36722), (602, 33184), (688, 29036), (731, 27328), (854, 23392), (952, 20984), (976, 20468), (1037, 19264), (1088, 18361), (1204, 16592), (1376, 14518), (1462, 13664), (1708, 11696), (1904, 10492), (1952, 10234), (2074, 9632), (2408, 8296), (2623, 7616), (2752, 7259), (2924, 6832), (3416, 5848), (3808, 5246), (3904, 5117), (4148, 4816)]