9990040

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1823}}^1$

素因数の和:1971

約数の個数: 32

約数和(自身を含む): 22654080

約数和(自身を除く): 12664040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 1823, 2740, 3646, 5480, 7292, 9115, 14584, 18230, 36460, 72920, 249751, 499502, 999004, 1248755, 1998008, 2497510, 4995020, 9990040]

約数ペア:

[(1, 9990040), (2, 4995020), (4, 2497510), (5, 1998008), (8, 1248755), (10, 999004), (20, 499502), (40, 249751), (137, 72920), (274, 36460), (548, 18230), (685, 14584), (1096, 9115), (1370, 7292), (1823, 5480), (2740, 3646)]