21206528

素因数分解:

$2^9\times 7^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:183

約数の個数: 80

約数和(自身を含む): 49725984

約数和(自身を除く): 28519456

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 61, 64, 97, 112, 122, 128, 194, 224, 244, 256, 388, 427, 448, 488, 512, 679, 776, 854, 896, 976, 1358, 1552, 1708, 1792, 1952, 2716, 3104, 3416, 3584, 3904, 5432, 5917, 6208, 6832, 7808, 10864, 11834, 12416, 13664, 15616, 21728, 23668, 24832, 27328, 31232, 41419, 43456, 47336, 49664, 54656, 82838, 86912, 94672, 109312, 165676, 173824, 189344, 218624, 331352, 347648, 378688, 662704, 757376, 1325408, 1514752, 2650816, 3029504, 5301632, 10603264, 21206528]

約数ペア:

[(1, 21206528), (2, 10603264), (4, 5301632), (7, 3029504), (8, 2650816), (14, 1514752), (16, 1325408), (28, 757376), (32, 662704), (56, 378688), (61, 347648), (64, 331352), (97, 218624), (112, 189344), (122, 173824), (128, 165676), (194, 109312), (224, 94672), (244, 86912), (256, 82838), (388, 54656), (427, 49664), (448, 47336), (488, 43456), (512, 41419), (679, 31232), (776, 27328), (854, 24832), (896, 23668), (976, 21728), (1358, 15616), (1552, 13664), (1708, 12416), (1792, 11834), (1952, 10864), (2716, 7808), (3104, 6832), (3416, 6208), (3584, 5917), (3904, 5432)]