145730440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1\times {\mathrm{439}}^1$

素因数の和:686

約数の個数: 64

約数和(自身を含む): 338025600

約数和(自身を除く): 192295160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 193, 215, 344, 386, 430, 439, 772, 860, 878, 965, 1544, 1720, 1756, 1930, 2195, 3512, 3860, 4390, 7720, 8299, 8780, 16598, 17560, 18877, 33196, 37754, 41495, 66392, 75508, 82990, 84727, 94385, 151016, 165980, 169454, 188770, 331960, 338908, 377540, 423635, 677816, 755080, 847270, 1694540, 3389080, 3643261, 7286522, 14573044, 18216305, 29146088, 36432610, 72865220, 145730440]

約数ペア:

[(1, 145730440), (2, 72865220), (4, 36432610), (5, 29146088), (8, 18216305), (10, 14573044), (20, 7286522), (40, 3643261), (43, 3389080), (86, 1694540), (172, 847270), (193, 755080), (215, 677816), (344, 423635), (386, 377540), (430, 338908), (439, 331960), (772, 188770), (860, 169454), (878, 165980), (965, 151016), (1544, 94385), (1720, 84727), (1756, 82990), (1930, 75508), (2195, 66392), (3512, 41495), (3860, 37754), (4390, 33196), (7720, 18877), (8299, 17560), (8780, 16598)]