661036760

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{41627}}^1$

素因数の和:42035

約数の個数: 32

約数和(自身を含む): 1491114960

約数和(自身を除く): 830078200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1985, 3176, 3970, 7940, 15880, 41627, 83254, 166508, 208135, 333016, 416270, 832540, 1665080, 16525919, 33051838, 66103676, 82629595, 132207352, 165259190, 330518380, 661036760]

約数ペア:

[(1, 661036760), (2, 330518380), (4, 165259190), (5, 132207352), (8, 82629595), (10, 66103676), (20, 33051838), (40, 16525919), (397, 1665080), (794, 832540), (1588, 416270), (1985, 333016), (3176, 208135), (3970, 166508), (7940, 83254), (15880, 41627)]