1299280

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:271

約数の個数: 40

約数和(自身を含む): 3069000

約数和(自身を除く): 1769720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 149, 218, 298, 436, 545, 596, 745, 872, 1090, 1192, 1490, 1744, 2180, 2384, 2980, 4360, 5960, 8720, 11920, 16241, 32482, 64964, 81205, 129928, 162410, 259856, 324820, 649640, 1299280]

約数ペア:

[(1, 1299280), (2, 649640), (4, 324820), (5, 259856), (8, 162410), (10, 129928), (16, 81205), (20, 64964), (40, 32482), (80, 16241), (109, 11920), (149, 8720), (218, 5960), (298, 4360), (436, 2980), (545, 2384), (596, 2180), (745, 1744), (872, 1490), (1090, 1192)]