25413215

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:491

約数の個数: 24

約数和(自身を含む): 33229680

約数和(自身を除く): 7816465

約数列:

[1, 5, 17, 43, 85, 215, 289, 409, 731, 1445, 2045, 3655, 6953, 12427, 17587, 34765, 62135, 87935, 118201, 298979, 591005, 1494895, 5082643, 25413215]

約数ペア:

[(1, 25413215), (5, 5082643), (17, 1494895), (43, 591005), (85, 298979), (215, 118201), (289, 87935), (409, 62135), (731, 34765), (1445, 17587), (2045, 12427), (3655, 6953)]