393979640

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{39241}}^1$

素因数の和:39503

約数の個数: 32

約数和(自身を含む): 890008560

約数和(自身を除く): 496028920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040, 39241, 78482, 156964, 196205, 313928, 392410, 784820, 1569640, 9849491, 19698982, 39397964, 49247455, 78795928, 98494910, 196989820, 393979640]

約数ペア:

[(1, 393979640), (2, 196989820), (4, 98494910), (5, 78795928), (8, 49247455), (10, 39397964), (20, 19698982), (40, 9849491), (251, 1569640), (502, 784820), (1004, 392410), (1255, 313928), (2008, 196205), (2510, 156964), (5020, 78482), (10040, 39241)]