19894784

素因数分解:

$2^9\times 7^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:106

約数の個数: 120

約数和(自身を含む): 50613948

約数和(自身を除く): 30719164

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 49, 52, 56, 61, 64, 91, 98, 104, 112, 122, 128, 182, 196, 208, 224, 244, 256, 364, 392, 416, 427, 448, 488, 512, 637, 728, 784, 793, 832, 854, 896, 976, 1274, 1456, 1568, 1586, 1664, 1708, 1792, 1952, 2548, 2912, 2989, 3136, 3172, 3328, 3416, 3584, 3904, 5096, 5551, 5824, 5978, 6272, 6344, 6656, 6832, 7808, 10192, 11102, 11648, 11956, 12544, 12688, 13664, 15616, 20384, 22204, 23296, 23912, 25088, 25376, 27328, 31232, 38857, 40768, 44408, 46592, 47824, 50752, 54656, 77714, 81536, 88816, 95648, 101504, 109312, 155428, 163072, 177632, 191296, 203008, 218624, 310856, 326144, 355264, 382592, 406016, 621712, 710528, 765184, 1243424, 1421056, 1530368, 2486848, 2842112, 4973696, 9947392, 19894784]

約数ペア:

[(1, 19894784), (2, 9947392), (4, 4973696), (7, 2842112), (8, 2486848), (13, 1530368), (14, 1421056), (16, 1243424), (26, 765184), (28, 710528), (32, 621712), (49, 406016), (52, 382592), (56, 355264), (61, 326144), (64, 310856), (91, 218624), (98, 203008), (104, 191296), (112, 177632), (122, 163072), (128, 155428), (182, 109312), (196, 101504), (208, 95648), (224, 88816), (244, 81536), (256, 77714), (364, 54656), (392, 50752), (416, 47824), (427, 46592), (448, 44408), (488, 40768), (512, 38857), (637, 31232), (728, 27328), (784, 25376), (793, 25088), (832, 23912), (854, 23296), (896, 22204), (976, 20384), (1274, 15616), (1456, 13664), (1568, 12688), (1586, 12544), (1664, 11956), (1708, 11648), (1792, 11102), (1952, 10192), (2548, 7808), (2912, 6832), (2989, 6656), (3136, 6344), (3172, 6272), (3328, 5978), (3416, 5824), (3584, 5551), (3904, 5096)]