9999880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22727}}^1$

素因数の和:22749

約数の個数: 32

約数和(自身を含む): 24546240

約数和(自身を除く): 14546360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 22727, 45454, 90908, 113635, 181816, 227270, 249997, 454540, 499994, 909080, 999988, 1249985, 1999976, 2499970, 4999940, 9999880]

約数ペア:

[(1, 9999880), (2, 4999940), (4, 2499970), (5, 1999976), (8, 1249985), (10, 999988), (11, 909080), (20, 499994), (22, 454540), (40, 249997), (44, 227270), (55, 181816), (88, 113635), (110, 90908), (220, 45454), (440, 22727)]