28639744

素因数分解:

$2^9\times 7^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:217

約数の個数: 80

約数和(自身を含む): 66977856

約数和(自身を除く): 38338112

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 61, 64, 112, 122, 128, 131, 224, 244, 256, 262, 427, 448, 488, 512, 524, 854, 896, 917, 976, 1048, 1708, 1792, 1834, 1952, 2096, 3416, 3584, 3668, 3904, 4192, 6832, 7336, 7808, 7991, 8384, 13664, 14672, 15616, 15982, 16768, 27328, 29344, 31232, 31964, 33536, 54656, 55937, 58688, 63928, 67072, 109312, 111874, 117376, 127856, 218624, 223748, 234752, 255712, 447496, 469504, 511424, 894992, 1022848, 1789984, 2045696, 3579968, 4091392, 7159936, 14319872, 28639744]

約数ペア:

[(1, 28639744), (2, 14319872), (4, 7159936), (7, 4091392), (8, 3579968), (14, 2045696), (16, 1789984), (28, 1022848), (32, 894992), (56, 511424), (61, 469504), (64, 447496), (112, 255712), (122, 234752), (128, 223748), (131, 218624), (224, 127856), (244, 117376), (256, 111874), (262, 109312), (427, 67072), (448, 63928), (488, 58688), (512, 55937), (524, 54656), (854, 33536), (896, 31964), (917, 31232), (976, 29344), (1048, 27328), (1708, 16768), (1792, 15982), (1834, 15616), (1952, 14672), (2096, 13664), (3416, 8384), (3584, 7991), (3668, 7808), (3904, 7336), (4192, 6832)]