19605025

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{6481}}^1$

素因数の和:6513

約数の個数: 18

約数和(自身を含む): 26725286

約数和(自身を除く): 7120261

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 6481, 32405, 71291, 162025, 356455, 784201, 1782275, 3921005, 19605025]

約数ペア:

[(1, 19605025), (5, 3921005), (11, 1782275), (25, 784201), (55, 356455), (121, 162025), (275, 71291), (605, 32405), (3025, 6481)]