128401280

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{28661}}^1$

素因数の和:28687

約数の個数: 64

約数和(自身を含む): 350822880

約数和(自身を除く): 222421600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 28661, 57322, 114644, 143305, 200627, 229288, 286610, 401254, 458576, 573220, 802508, 917152, 1003135, 1146440, 1605016, 1834304, 2006270, 2292880, 3210032, 3668608, 4012540, 4585760, 6420064, 8025080, 9171520, 12840128, 16050160, 18343040, 25680256, 32100320, 64200640, 128401280]

約数ペア:

[(1, 128401280), (2, 64200640), (4, 32100320), (5, 25680256), (7, 18343040), (8, 16050160), (10, 12840128), (14, 9171520), (16, 8025080), (20, 6420064), (28, 4585760), (32, 4012540), (35, 3668608), (40, 3210032), (56, 2292880), (64, 2006270), (70, 1834304), (80, 1605016), (112, 1146440), (128, 1003135), (140, 917152), (160, 802508), (224, 573220), (280, 458576), (320, 401254), (448, 286610), (560, 229288), (640, 200627), (896, 143305), (1120, 114644), (2240, 57322), (4480, 28661)]