161569881100

素因数分解:

$2^2\times 5^2\times {\mathrm{1997}}^1\times {\mathrm{809063}}^1$

素因数の和:811074

約数の個数: 36

約数和(自身を含む): 350782642224

約数和(自身を除く): 189212761124

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 1997, 3994, 7988, 9985, 19970, 39940, 49925, 99850, 199700, 809063, 1618126, 3236252, 4045315, 8090630, 16181260, 20226575, 40453150, 80906300, 1615698811, 3231397622, 6462795244, 8078494055, 16156988110, 32313976220, 40392470275, 80784940550, 161569881100]

約数ペア:

[(1, 161569881100), (2, 80784940550), (4, 40392470275), (5, 32313976220), (10, 16156988110), (20, 8078494055), (25, 6462795244), (50, 3231397622), (100, 1615698811), (1997, 80906300), (3994, 40453150), (7988, 20226575), (9985, 16181260), (19970, 8090630), (39940, 4045315), (49925, 3236252), (99850, 1618126), (199700, 809063)]