19902245

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{15733}}^1$

素因数の和:15772

約数の個数: 16

約数和(自身を含む): 27188352

約数和(自身を除く): 7286107

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 15733, 78665, 173063, 361859, 865315, 1809295, 3980449, 19902245]

約数ペア:

[(1, 19902245), (5, 3980449), (11, 1809295), (23, 865315), (55, 361859), (115, 173063), (253, 78665), (1265, 15733)]