39986000

素因数分解:

$2^4\times 5^3\times {\mathrm{19993}}^1$

素因数の和:20016

約数の個数: 40

約数和(自身を含む): 96690984

約数和(自身を除く): 56704984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 19993, 39986, 79972, 99965, 159944, 199930, 319888, 399860, 499825, 799720, 999650, 1599440, 1999300, 2499125, 3998600, 4998250, 7997200, 9996500, 19993000, 39986000]

約数ペア:

[(1, 39986000), (2, 19993000), (4, 9996500), (5, 7997200), (8, 4998250), (10, 3998600), (16, 2499125), (20, 1999300), (25, 1599440), (40, 999650), (50, 799720), (80, 499825), (100, 399860), (125, 319888), (200, 199930), (250, 159944), (400, 99965), (500, 79972), (1000, 39986), (2000, 19993)]