20219705

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1759}}^1$

素因数の和:1805

約数の個数: 24

約数和(自身を含む): 28089600

約数和(自身を除く): 7869895

約数列:

[1, 5, 11, 19, 55, 95, 121, 209, 605, 1045, 1759, 2299, 8795, 11495, 19349, 33421, 96745, 167105, 212839, 367631, 1064195, 1838155, 4043941, 20219705]

約数ペア:

[(1, 20219705), (5, 4043941), (11, 1838155), (19, 1064195), (55, 367631), (95, 212839), (121, 167105), (209, 96745), (605, 33421), (1045, 19349), (1759, 11495), (2299, 8795)]