39221080

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1997}}^1$

素因数の和:2499

約数の個数: 32

約数和(自身を含む): 88471440

約数和(自身を除く): 49250360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 1997, 2455, 3928, 3994, 4910, 7988, 9820, 9985, 15976, 19640, 19970, 39940, 79880, 980527, 1961054, 3922108, 4902635, 7844216, 9805270, 19610540, 39221080]

約数ペア:

[(1, 39221080), (2, 19610540), (4, 9805270), (5, 7844216), (8, 4902635), (10, 3922108), (20, 1961054), (40, 980527), (491, 79880), (982, 39940), (1964, 19970), (1997, 19640), (2455, 15976), (3928, 9985), (3994, 9820), (4910, 7988)]