21986000

素因数分解:

$2^4\times 5^3\times {\mathrm{10993}}^1$

素因数の和:11016

約数の個数: 40

約数和(自身を含む): 53166984

約数和(自身を除く): 31180984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10993, 21986, 43972, 54965, 87944, 109930, 175888, 219860, 274825, 439720, 549650, 879440, 1099300, 1374125, 2198600, 2748250, 4397200, 5496500, 10993000, 21986000]

約数ペア:

[(1, 21986000), (2, 10993000), (4, 5496500), (5, 4397200), (8, 2748250), (10, 2198600), (16, 1374125), (20, 1099300), (25, 879440), (40, 549650), (50, 439720), (80, 274825), (100, 219860), (125, 175888), (200, 109930), (250, 87944), (400, 54965), (500, 43972), (1000, 21986), (2000, 10993)]