66418900

素因数分解:

$2^2\times 5^2\times {\mathrm{809}}^1\times {\mathrm{821}}^1$

素因数の和:1644

約数の個数: 36

約数和(自身を含む): 144482940

約数和(自身を除く): 78064040

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 809, 821, 1618, 1642, 3236, 3284, 4045, 4105, 8090, 8210, 16180, 16420, 20225, 20525, 40450, 41050, 80900, 82100, 664189, 1328378, 2656756, 3320945, 6641890, 13283780, 16604725, 33209450, 66418900]

約数ペア:

[(1, 66418900), (2, 33209450), (4, 16604725), (5, 13283780), (10, 6641890), (20, 3320945), (25, 2656756), (50, 1328378), (100, 664189), (809, 82100), (821, 80900), (1618, 41050), (1642, 40450), (3236, 20525), (3284, 20225), (4045, 16420), (4105, 16180), (8090, 8210)]