128512

素因数分解:

$2^9\times {\mathrm{251}}^1$

素因数の和:269

約数の個数: 20

約数和(自身を含む): 257796

約数和(自身を除く): 129284

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 251, 256, 502, 512, 1004, 2008, 4016, 8032, 16064, 32128, 64256, 128512]

約数ペア:

[(1, 128512), (2, 64256), (4, 32128), (8, 16064), (16, 8032), (32, 4016), (64, 2008), (128, 1004), (251, 512), (256, 502)]