25680645

素因数分解:

$3^4\times 5^1\times {\mathrm{63409}}^1$

素因数の和:63426

約数の個数: 20

約数和(自身を含む): 46035660

約数和(自身を除く): 20355015

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 63409, 190227, 317045, 570681, 951135, 1712043, 2853405, 5136129, 8560215, 25680645]

約数ペア:

[(1, 25680645), (3, 8560215), (5, 5136129), (9, 2853405), (15, 1712043), (27, 951135), (45, 570681), (81, 317045), (135, 190227), (405, 63409)]