40800400

素因数分解:

$2^4\times 5^2\times {\mathrm{102001}}^1$

素因数の和:102019

約数の個数: 30

約数和(自身を含む): 98023922

約数和(自身を除く): 57223522

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 102001, 204002, 408004, 510005, 816008, 1020010, 1632016, 2040020, 2550025, 4080040, 5100050, 8160080, 10200100, 20400200, 40800400]

約数ペア:

[(1, 40800400), (2, 20400200), (4, 10200100), (5, 8160080), (8, 5100050), (10, 4080040), (16, 2550025), (20, 2040020), (25, 1632016), (40, 1020010), (50, 816008), (80, 510005), (100, 408004), (200, 204002), (400, 102001)]