257431085

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{67}}^1\times {\mathrm{2659}}^1$

素因数の和:2765

約数の個数: 24

約数和(自身を含む): 333180960

約数和(自身を除く): 75749875

約数列:

[1, 5, 17, 67, 85, 289, 335, 1139, 1445, 2659, 5695, 13295, 19363, 45203, 96815, 178153, 226015, 768451, 890765, 3028601, 3842255, 15143005, 51486217, 257431085]

約数ペア:

[(1, 257431085), (5, 51486217), (17, 15143005), (67, 3842255), (85, 3028601), (289, 890765), (335, 768451), (1139, 226015), (1445, 178153), (2659, 96815), (5695, 45203), (13295, 19363)]