211234540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{191}}^1\times {\mathrm{457}}^1$

素因数の和:679

約数の個数: 72

約数和(自身を含む): 491210496

約数和(自身を除く): 279975956

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 191, 220, 242, 382, 457, 484, 605, 764, 914, 955, 1210, 1828, 1910, 2101, 2285, 2420, 3820, 4202, 4570, 5027, 8404, 9140, 10054, 10505, 20108, 21010, 23111, 25135, 42020, 46222, 50270, 55297, 87287, 92444, 100540, 110594, 115555, 174574, 221188, 231110, 276485, 349148, 436435, 462220, 552970, 872870, 960157, 1105940, 1745740, 1920314, 3840628, 4800785, 9601570, 10561727, 19203140, 21123454, 42246908, 52808635, 105617270, 211234540]

約数ペア:

[(1, 211234540), (2, 105617270), (4, 52808635), (5, 42246908), (10, 21123454), (11, 19203140), (20, 10561727), (22, 9601570), (44, 4800785), (55, 3840628), (110, 1920314), (121, 1745740), (191, 1105940), (220, 960157), (242, 872870), (382, 552970), (457, 462220), (484, 436435), (605, 349148), (764, 276485), (914, 231110), (955, 221188), (1210, 174574), (1828, 115555), (1910, 110594), (2101, 100540), (2285, 92444), (2420, 87287), (3820, 55297), (4202, 50270), (4570, 46222), (5027, 42020), (8404, 25135), (9140, 23111), (10054, 21010), (10505, 20108)]