259605

素因数分解:

$3^4\times 5^1\times {\mathrm{641}}^1$

素因数の和:658

約数の個数: 20

約数和(自身を含む): 466092

約数和(自身を除く): 206487

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 641, 1923, 3205, 5769, 9615, 17307, 28845, 51921, 86535, 259605]

約数ペア:

[(1, 259605), (3, 86535), (5, 51921), (9, 28845), (15, 17307), (27, 9615), (45, 5769), (81, 3205), (135, 1923), (405, 641)]