19785452

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{223}}^1\times {\mathrm{541}}^1$

素因数の和:809

約数の個数: 24

約数和(自身を含む): 35693952

約数和(自身を除く): 15908500

約数列:

[1, 2, 4, 41, 82, 164, 223, 446, 541, 892, 1082, 2164, 9143, 18286, 22181, 36572, 44362, 88724, 120643, 241286, 482572, 4946363, 9892726, 19785452]

約数ペア:

[(1, 19785452), (2, 9892726), (4, 4946363), (41, 482572), (82, 241286), (164, 120643), (223, 88724), (446, 44362), (541, 36572), (892, 22181), (1082, 18286), (2164, 9143)]