80428160

素因数分解:

$2^7\times 5^1\times {\mathrm{125669}}^1$

素因数の和:125688

約数の個数: 32

約数和(自身を含む): 192275100

約数和(自身を除く): 111846940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 125669, 251338, 502676, 628345, 1005352, 1256690, 2010704, 2513380, 4021408, 5026760, 8042816, 10053520, 16085632, 20107040, 40214080, 80428160]

約数ペア:

[(1, 80428160), (2, 40214080), (4, 20107040), (5, 16085632), (8, 10053520), (10, 8042816), (16, 5026760), (20, 4021408), (32, 2513380), (40, 2010704), (64, 1256690), (80, 1005352), (128, 628345), (160, 502676), (320, 251338), (640, 125669)]