64642180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{170111}}^1$

素因数の和:170139

約数の個数: 24

約数和(自身を含む): 142894080

約数和(自身を除く): 78251900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 170111, 340222, 680444, 850555, 1701110, 3232109, 3402220, 6464218, 12928436, 16160545, 32321090, 64642180]

約数ペア:

[(1, 64642180), (2, 32321090), (4, 16160545), (5, 12928436), (10, 6464218), (19, 3402220), (20, 3232109), (38, 1701110), (76, 850555), (95, 680444), (190, 340222), (380, 170111)]