28780276

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{467}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 60383232

約数和(自身を除く): 31602956

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 71, 124, 142, 217, 284, 434, 467, 497, 868, 934, 994, 1868, 1988, 2201, 3269, 4402, 6538, 8804, 13076, 14477, 15407, 28954, 30814, 33157, 57908, 61628, 66314, 101339, 132628, 202678, 232099, 405356, 464198, 928396, 1027867, 2055734, 4111468, 7195069, 14390138, 28780276]

約数ペア:

[(1, 28780276), (2, 14390138), (4, 7195069), (7, 4111468), (14, 2055734), (28, 1027867), (31, 928396), (62, 464198), (71, 405356), (124, 232099), (142, 202678), (217, 132628), (284, 101339), (434, 66314), (467, 61628), (497, 57908), (868, 33157), (934, 30814), (994, 28954), (1868, 15407), (1988, 14477), (2201, 13076), (3269, 8804), (4402, 6538)]