128431088

素因数分解:

$2^4\times {\mathrm{397}}^1\times {\mathrm{20219}}^1$

素因数の和:20624

約数の個数: 20

約数和(自身を含む): 249474360

約数和(自身を除く): 121043272

約数列:

[1, 2, 4, 8, 16, 397, 794, 1588, 3176, 6352, 20219, 40438, 80876, 161752, 323504, 8026943, 16053886, 32107772, 64215544, 128431088]

約数ペア:

[(1, 128431088), (2, 64215544), (4, 32107772), (8, 16053886), (16, 8026943), (397, 323504), (794, 161752), (1588, 80876), (3176, 40438), (6352, 20219)]