160640

素因数分解:

$2^7\times 5^1\times {\mathrm{251}}^1$

素因数の和:270

約数の個数: 32

約数和(自身を含む): 385560

約数和(自身を除く): 224920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 251, 320, 502, 640, 1004, 1255, 2008, 2510, 4016, 5020, 8032, 10040, 16064, 20080, 32128, 40160, 80320, 160640]

約数ペア:

[(1, 160640), (2, 80320), (4, 40160), (5, 32128), (8, 20080), (10, 16064), (16, 10040), (20, 8032), (32, 5020), (40, 4016), (64, 2510), (80, 2008), (128, 1255), (160, 1004), (251, 640), (320, 502)]