199486580

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{12149}}^1$

素因数の和:12979

約数の個数: 24

約数和(自身を含む): 419466600

約数和(自身を除く): 219980020

約数列:

[1, 2, 4, 5, 10, 20, 821, 1642, 3284, 4105, 8210, 12149, 16420, 24298, 48596, 60745, 121490, 242980, 9974329, 19948658, 39897316, 49871645, 99743290, 199486580]

約数ペア:

[(1, 199486580), (2, 99743290), (4, 49871645), (5, 39897316), (10, 19948658), (20, 9974329), (821, 242980), (1642, 121490), (3284, 60745), (4105, 48596), (8210, 24298), (12149, 16420)]