261913215

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{406067}}^1$

素因数の和:406118

約数の個数: 16

約数和(自身を含む): 428807808

約数和(自身を除く): 166894593

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 406067, 1218201, 2030335, 6091005, 17460881, 52382643, 87304405, 261913215]

約数ペア:

[(1, 261913215), (3, 87304405), (5, 52382643), (15, 17460881), (43, 6091005), (129, 2030335), (215, 1218201), (645, 406067)]