25128820

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{12953}}^1$

素因数の和:13059

約数の個数: 24

約数和(自身を含む): 53318664

約数和(自身を除く): 28189844

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 12953, 25906, 51812, 64765, 129530, 259060, 1256441, 2512882, 5025764, 6282205, 12564410, 25128820]

約数ペア:

[(1, 25128820), (2, 12564410), (4, 6282205), (5, 5025764), (10, 2512882), (20, 1256441), (97, 259060), (194, 129530), (388, 64765), (485, 51812), (970, 25906), (1940, 12953)]