28409180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{74761}}^1$

素因数の和:74789

約数の個数: 24

約数和(自身を含む): 62800080

約数和(自身を除く): 34390900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 74761, 149522, 299044, 373805, 747610, 1420459, 1495220, 2840918, 5681836, 7102295, 14204590, 28409180]

約数ペア:

[(1, 28409180), (2, 14204590), (4, 7102295), (5, 5681836), (10, 2840918), (19, 1495220), (20, 1420459), (38, 747610), (76, 373805), (95, 299044), (190, 149522), (380, 74761)]