81747740

素因数分解:

$2^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{11579}}^1$

素因数の和:11941

約数の個数: 24

約数和(自身を含む): 172171440

約数和(自身を除く): 90423700

約数列:

[1, 2, 4, 5, 10, 20, 353, 706, 1412, 1765, 3530, 7060, 11579, 23158, 46316, 57895, 115790, 231580, 4087387, 8174774, 16349548, 20436935, 40873870, 81747740]

約数ペア:

[(1, 81747740), (2, 40873870), (4, 20436935), (5, 16349548), (10, 8174774), (20, 4087387), (353, 231580), (706, 115790), (1412, 57895), (1765, 46316), (3530, 23158), (7060, 11579)]