21921820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{57689}}^1$

素因数の和:57717

約数の個数: 24

約数和(自身を含む): 48459600

約数和(自身を除く): 26537780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 57689, 115378, 230756, 288445, 576890, 1096091, 1153780, 2192182, 4384364, 5480455, 10960910, 21921820]

約数ペア:

[(1, 21921820), (2, 10960910), (4, 5480455), (5, 4384364), (10, 2192182), (19, 1153780), (20, 1096091), (38, 576890), (76, 288445), (95, 230756), (190, 115378), (380, 57689)]