20508273

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{431}}^1$

素因数の和:765

約数の個数: 24

約数和(自身を含む): 31539456

約数和(自身を除く): 11031183

約数列:

[1, 3, 9, 17, 51, 153, 311, 431, 933, 1293, 2799, 3879, 5287, 7327, 15861, 21981, 47583, 65943, 134041, 402123, 1206369, 2278697, 6836091, 20508273]

約数ペア:

[(1, 20508273), (3, 6836091), (9, 2278697), (17, 1206369), (51, 402123), (153, 134041), (311, 65943), (431, 47583), (933, 21981), (1293, 15861), (2799, 7327), (3879, 5287)]