79760

素因数分解:

$2^4\times 5^1\times {\mathrm{997}}^1$

素因数の和:1010

約数の個数: 20

約数和(自身を含む): 185628

約数和(自身を除く): 105868

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 997, 1994, 3988, 4985, 7976, 9970, 15952, 19940, 39880, 79760]

約数ペア:

[(1, 79760), (2, 39880), (4, 19940), (5, 15952), (8, 9970), (10, 7976), (16, 4985), (20, 3988), (40, 1994), (80, 997)]