128749990

素因数分解:

$2^1\times 5^1\times {\mathrm{2549}}^1\times {\mathrm{5051}}^1$

素因数の和:7607

約数の個数: 16

約数和(自身を含む): 231886800

約数和(自身を除く): 103136810

約数列:

[1, 2, 5, 10, 2549, 5051, 5098, 10102, 12745, 25255, 25490, 50510, 12874999, 25749998, 64374995, 128749990]

約数ペア:

[(1, 128749990), (2, 64374995), (5, 25749998), (10, 12874999), (2549, 50510), (5051, 25490), (5098, 25255), (10102, 12745)]