128781885

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{505027}}^1$

素因数の和:505052

約数の個数: 16

約数和(自身を含む): 218172096

約数和(自身を除く): 89390211

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 505027, 1515081, 2525135, 7575405, 8585459, 25756377, 42927295, 128781885]

約数ペア:

[(1, 128781885), (3, 42927295), (5, 25756377), (15, 8585459), (17, 7575405), (51, 2525135), (85, 1515081), (255, 505027)]