20902805

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{54293}}^1$

素因数の和:54316

約数の個数: 16

約数和(自身を含む): 31273344

約数和(自身を除く): 10370539

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 54293, 271465, 380051, 597223, 1900255, 2986115, 4180561, 20902805]

約数ペア:

[(1, 20902805), (5, 4180561), (7, 2986115), (11, 1900255), (35, 597223), (55, 380051), (77, 271465), (385, 54293)]