261205005

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{404969}}^1$

素因数の和:405020

約数の個数: 16

約数和(自身を含む): 427648320

約数和(自身を除く): 166443315

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 404969, 1214907, 2024845, 6074535, 17413667, 52241001, 87068335, 261205005]

約数ペア:

[(1, 261205005), (3, 87068335), (5, 52241001), (15, 17413667), (43, 6074535), (129, 2024845), (215, 1214907), (645, 404969)]