159520

素因数分解:

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

素因数の和:1012

約数の個数: 24

約数和(自身を含む): 377244

約数和(自身を除く): 217724

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 997, 1994, 3988, 4985, 7976, 9970, 15952, 19940, 31904, 39880, 79760, 159520]

約数ペア:

[(1, 159520), (2, 79760), (4, 39880), (5, 31904), (8, 19940), (10, 15952), (16, 9970), (20, 7976), (32, 4985), (40, 3988), (80, 1994), (160, 997)]