81326800

素因数分解:

$2^4\times 5^2\times {\mathrm{203317}}^1$

素因数の和:203335

約数の個数: 30

約数和(自身を含む): 195388598

約数和(自身を除く): 114061798

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 203317, 406634, 813268, 1016585, 1626536, 2033170, 3253072, 4066340, 5082925, 8132680, 10165850, 16265360, 20331700, 40663400, 81326800]

約数ペア:

[(1, 81326800), (2, 40663400), (4, 20331700), (5, 16265360), (8, 10165850), (10, 8132680), (16, 5082925), (20, 4066340), (25, 3253072), (40, 2033170), (50, 1626536), (80, 1016585), (100, 813268), (200, 406634), (400, 203317)]