25784540

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{13291}}^1$

素因数の和:13397

約数の個数: 24

約数和(自身を含む): 54709872

約数和(自身を除く): 28925332

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 13291, 26582, 53164, 66455, 132910, 265820, 1289227, 2578454, 5156908, 6446135, 12892270, 25784540]

約数ペア:

[(1, 25784540), (2, 12892270), (4, 6446135), (5, 5156908), (10, 2578454), (20, 1289227), (97, 265820), (194, 132910), (388, 66455), (485, 53164), (970, 26582), (1940, 13291)]