20903799

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{179}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 32901120

約数和(自身を除く): 11997321

約数列:

[1, 3, 7, 21, 67, 83, 179, 201, 249, 469, 537, 581, 1253, 1407, 1743, 3759, 5561, 11993, 14857, 16683, 35979, 38927, 44571, 83951, 103999, 116781, 251853, 311997, 995419, 2986257, 6967933, 20903799]

約数ペア:

[(1, 20903799), (3, 6967933), (7, 2986257), (21, 995419), (67, 311997), (83, 251853), (179, 116781), (201, 103999), (249, 83951), (469, 44571), (537, 38927), (581, 35979), (1253, 16683), (1407, 14857), (1743, 11993), (3759, 5561)]