398750425

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{431}}^1\times {\mathrm{1609}}^1$

素因数の和:2073

約数の個数: 24

約数和(自身を含む): 517466880

約数和(自身を除く): 118716455

約数列:

[1, 5, 23, 25, 115, 431, 575, 1609, 2155, 8045, 9913, 10775, 37007, 40225, 49565, 185035, 247825, 693479, 925175, 3467395, 15950017, 17336975, 79750085, 398750425]

約数ペア:

[(1, 398750425), (5, 79750085), (23, 17336975), (25, 15950017), (115, 3467395), (431, 925175), (575, 693479), (1609, 247825), (2155, 185035), (8045, 49565), (9913, 40225), (10775, 37007)]