18840745

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{6991}}^1$

素因数の和:7021

約数の個数: 24

約数和(自身を含む): 28695168

約数和(自身を除く): 9854423

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 2695, 6991, 34955, 48937, 76901, 244685, 342559, 384505, 538307, 1712795, 2691535, 3768149, 18840745]

約数ペア:

[(1, 18840745), (5, 3768149), (7, 2691535), (11, 1712795), (35, 538307), (49, 384505), (55, 342559), (77, 244685), (245, 76901), (385, 48937), (539, 34955), (2695, 6991)]