19564732

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{40423}}^1$

素因数の和:40449

約数の個数: 18

約数和(自身を含む): 37634744

約数和(自身を除く): 18070012

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 40423, 80846, 161692, 444653, 889306, 1778612, 4891183, 9782366, 19564732]

約数ペア:

[(1, 19564732), (2, 9782366), (4, 4891183), (11, 1778612), (22, 889306), (44, 444653), (121, 161692), (242, 80846), (484, 40423)]