128996480

素因数分解:

$2^7\times 5^1\times {\mathrm{201557}}^1$

素因数の和:201576

約数の個数: 32

約数和(自身を含む): 308383740

約数和(自身を除く): 179387260

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 201557, 403114, 806228, 1007785, 1612456, 2015570, 3224912, 4031140, 6449824, 8062280, 12899648, 16124560, 25799296, 32249120, 64498240, 128996480]

約数ペア:

[(1, 128996480), (2, 64498240), (4, 32249120), (5, 25799296), (8, 16124560), (10, 12899648), (16, 8062280), (20, 6449824), (32, 4031140), (40, 3224912), (64, 2015570), (80, 1612456), (128, 1007785), (160, 806228), (320, 403114), (640, 201557)]