1278138736

素因数分解:

$2^4\times 7^7\times {\mathrm{97}}^1$

素因数の和:154

約数の個数: 80

約数和(自身を含む): 2918910400

約数和(自身を除く): 1640771664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 97, 98, 112, 194, 196, 343, 388, 392, 679, 686, 776, 784, 1358, 1372, 1552, 2401, 2716, 2744, 4753, 4802, 5432, 5488, 9506, 9604, 10864, 16807, 19012, 19208, 33271, 33614, 38024, 38416, 66542, 67228, 76048, 117649, 133084, 134456, 232897, 235298, 266168, 268912, 465794, 470596, 532336, 823543, 931588, 941192, 1630279, 1647086, 1863176, 1882384, 3260558, 3294172, 3726352, 6521116, 6588344, 11411953, 13042232, 13176688, 22823906, 26084464, 45647812, 79883671, 91295624, 159767342, 182591248, 319534684, 639069368, 1278138736]

約数ペア:

[(1, 1278138736), (2, 639069368), (4, 319534684), (7, 182591248), (8, 159767342), (14, 91295624), (16, 79883671), (28, 45647812), (49, 26084464), (56, 22823906), (97, 13176688), (98, 13042232), (112, 11411953), (194, 6588344), (196, 6521116), (343, 3726352), (388, 3294172), (392, 3260558), (679, 1882384), (686, 1863176), (776, 1647086), (784, 1630279), (1358, 941192), (1372, 931588), (1552, 823543), (2401, 532336), (2716, 470596), (2744, 465794), (4753, 268912), (4802, 266168), (5432, 235298), (5488, 232897), (9506, 134456), (9604, 133084), (10864, 117649), (16807, 76048), (19012, 67228), (19208, 66542), (33271, 38416), (33614, 38024)]