20915636

素因数分解:

$2^2\times 7^1\times {\mathrm{181}}^1\times {\mathrm{4127}}^1$

素因数の和:4319

約数の個数: 24

約数和(自身を含む): 42072576

約数和(自身を除く): 21156940

約数列:

[1, 2, 4, 7, 14, 28, 181, 362, 724, 1267, 2534, 4127, 5068, 8254, 16508, 28889, 57778, 115556, 746987, 1493974, 2987948, 5228909, 10457818, 20915636]

約数ペア:

[(1, 20915636), (2, 10457818), (4, 5228909), (7, 2987948), (14, 1493974), (28, 746987), (181, 115556), (362, 57778), (724, 28889), (1267, 16508), (2534, 8254), (4127, 5068)]