401600

素因数分解:

$2^6\times 5^2\times {\mathrm{251}}^1$

素因数の和:273

約数の個数: 42

約数和(自身を含む): 992124

約数和(自身を除く): 590524

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 251, 320, 400, 502, 800, 1004, 1255, 1600, 2008, 2510, 4016, 5020, 6275, 8032, 10040, 12550, 16064, 20080, 25100, 40160, 50200, 80320, 100400, 200800, 401600]

約数ペア:

[(1, 401600), (2, 200800), (4, 100400), (5, 80320), (8, 50200), (10, 40160), (16, 25100), (20, 20080), (25, 16064), (32, 12550), (40, 10040), (50, 8032), (64, 6275), (80, 5020), (100, 4016), (160, 2510), (200, 2008), (251, 1600), (320, 1255), (400, 1004), (502, 800)]