128776165

素因数分解:

$5^1\times 7^2\times {\mathrm{353}}^1\times {\mathrm{1489}}^1$

素因数の和:1861

約数の個数: 24

約数和(自身を含む): 180391320

約数和(自身を除く): 51615155

約数列:

[1, 5, 7, 35, 49, 245, 353, 1489, 1765, 2471, 7445, 10423, 12355, 17297, 52115, 72961, 86485, 364805, 525617, 2628085, 3679319, 18396595, 25755233, 128776165]

約数ペア:

[(1, 128776165), (5, 25755233), (7, 18396595), (35, 3679319), (49, 2628085), (245, 525617), (353, 364805), (1489, 86485), (1765, 72961), (2471, 52115), (7445, 17297), (10423, 12355)]