20101389

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{503}}^1$

素因数の和:697

約数の個数: 32

約数和(自身を含む): 33675264

約数和(自身を除く): 13573875

約数列:

[1, 3, 7, 11, 21, 33, 77, 173, 231, 503, 519, 1211, 1509, 1903, 3521, 3633, 5533, 5709, 10563, 13321, 16599, 38731, 39963, 87019, 116193, 261057, 609133, 957209, 1827399, 2871627, 6700463, 20101389]

約数ペア:

[(1, 20101389), (3, 6700463), (7, 2871627), (11, 1827399), (21, 957209), (33, 609133), (77, 261057), (173, 116193), (231, 87019), (503, 39963), (519, 38731), (1211, 16599), (1509, 13321), (1903, 10563), (3521, 5709), (3633, 5533)]