28920983

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1$

素因数の和:471

約数の個数: 32

約数和(自身を含む): 38438400

約数和(自身を除く): 9517417

約数列:

[1, 7, 13, 19, 43, 91, 133, 247, 301, 389, 559, 817, 1729, 2723, 3913, 5057, 5719, 7391, 10621, 16727, 35399, 51737, 74347, 96083, 117089, 217451, 317813, 672581, 1522157, 2224691, 4131569, 28920983]

約数ペア:

[(1, 28920983), (7, 4131569), (13, 2224691), (19, 1522157), (43, 672581), (91, 317813), (133, 217451), (247, 117089), (301, 96083), (389, 74347), (559, 51737), (817, 35399), (1729, 16727), (2723, 10621), (3913, 7391), (5057, 5719)]