39994000

素因数分解:

$2^4\times 5^3\times {\mathrm{19997}}^1$

素因数の和:20020

約数の個数: 40

約数和(自身を含む): 96710328

約数和(自身を除く): 56716328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 19997, 39994, 79988, 99985, 159976, 199970, 319952, 399940, 499925, 799880, 999850, 1599760, 1999700, 2499625, 3999400, 4999250, 7998800, 9998500, 19997000, 39994000]

約数ペア:

[(1, 39994000), (2, 19997000), (4, 9998500), (5, 7998800), (8, 4999250), (10, 3999400), (16, 2499625), (20, 1999700), (25, 1599760), (40, 999850), (50, 799880), (80, 499925), (100, 399940), (125, 319952), (200, 199970), (250, 159976), (400, 99985), (500, 79988), (1000, 39994), (2000, 19997)]