128260480

素因数分解:

$2^7\times 5^1\times {\mathrm{200407}}^1$

素因数の和:200426

約数の個数: 32

約数和(自身を含む): 306624240

約数和(自身を除く): 178363760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 200407, 400814, 801628, 1002035, 1603256, 2004070, 3206512, 4008140, 6413024, 8016280, 12826048, 16032560, 25652096, 32065120, 64130240, 128260480]

約数ペア:

[(1, 128260480), (2, 64130240), (4, 32065120), (5, 25652096), (8, 16032560), (10, 12826048), (16, 8016280), (20, 6413024), (32, 4008140), (40, 3206512), (64, 2004070), (80, 1603256), (128, 1002035), (160, 801628), (320, 400814), (640, 200407)]