68800400

素因数分解:

$2^4\times 5^2\times {\mathrm{172001}}^1$

素因数の和:172019

約数の個数: 30

約数和(自身を含む): 165293922

約数和(自身を除く): 96493522

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 172001, 344002, 688004, 860005, 1376008, 1720010, 2752016, 3440020, 4300025, 6880040, 8600050, 13760080, 17200100, 34400200, 68800400]

約数ペア:

[(1, 68800400), (2, 34400200), (4, 17200100), (5, 13760080), (8, 8600050), (10, 6880040), (16, 4300025), (20, 3440020), (25, 2752016), (40, 1720010), (50, 1376008), (80, 860005), (100, 688004), (200, 344002), (400, 172001)]