19885019

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{1381}}^1$

素因数の和:1427

約数の個数: 24

約数和(自身を含む): 26468064

約数和(自身を除く): 6583045

約数列:

[1, 7, 11, 17, 77, 119, 121, 187, 847, 1309, 1381, 2057, 9667, 14399, 15191, 23477, 106337, 164339, 167101, 258247, 1169707, 1807729, 2840717, 19885019]

約数ペア:

[(1, 19885019), (7, 2840717), (11, 1807729), (17, 1169707), (77, 258247), (119, 167101), (121, 164339), (187, 106337), (847, 23477), (1309, 15191), (1381, 14399), (2057, 9667)]