878680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1997}}^1$

素因数の和:2019

約数の個数: 32

約数和(自身を含む): 2157840

約数和(自身を除く): 1279160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 1997, 3994, 7988, 9985, 15976, 19970, 21967, 39940, 43934, 79880, 87868, 109835, 175736, 219670, 439340, 878680]

約数ペア:

[(1, 878680), (2, 439340), (4, 219670), (5, 175736), (8, 109835), (10, 87868), (11, 79880), (20, 43934), (22, 39940), (40, 21967), (44, 19970), (55, 15976), (88, 9985), (110, 7988), (220, 3994), (440, 1997)]