128439255

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{1223231}}^1$

素因数の和:1223246

約数の個数: 16

約数和(自身を含む): 234860544

約数和(自身を除く): 106421289

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 1223231, 3669693, 6116155, 8562617, 18348465, 25687851, 42813085, 128439255]

約数ペア:

[(1, 128439255), (3, 42813085), (5, 25687851), (7, 18348465), (15, 8562617), (21, 6116155), (35, 3669693), (105, 1223231)]