20105397

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{719}}^1$

素因数の和:977

約数の個数: 24

約数和(自身を含む): 31449600

約数和(自身を除く): 11344203

約数列:

[1, 3, 9, 13, 39, 117, 239, 717, 719, 2151, 2157, 3107, 6471, 9321, 9347, 27963, 28041, 84123, 171841, 515523, 1546569, 2233933, 6701799, 20105397]

約数ペア:

[(1, 20105397), (3, 6701799), (9, 2233933), (13, 1546569), (39, 515523), (117, 171841), (239, 84123), (717, 28041), (719, 27963), (2151, 9347), (2157, 9321), (3107, 6471)]