21992000

素因数分解:

$2^6\times 5^3\times {\mathrm{2749}}^1$

素因数の和:2776

約数の個数: 56

約数和(自身を含む): 54483000

約数和(自身を除く): 32491000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 800, 1000, 1600, 2000, 2749, 4000, 5498, 8000, 10996, 13745, 21992, 27490, 43984, 54980, 68725, 87968, 109960, 137450, 175936, 219920, 274900, 343625, 439840, 549800, 687250, 879680, 1099600, 1374500, 2199200, 2749000, 4398400, 5498000, 10996000, 21992000]

約数ペア:

[(1, 21992000), (2, 10996000), (4, 5498000), (5, 4398400), (8, 2749000), (10, 2199200), (16, 1374500), (20, 1099600), (25, 879680), (32, 687250), (40, 549800), (50, 439840), (64, 343625), (80, 274900), (100, 219920), (125, 175936), (160, 137450), (200, 109960), (250, 87968), (320, 68725), (400, 54980), (500, 43984), (800, 27490), (1000, 21992), (1600, 13745), (2000, 10996), (2749, 8000), (4000, 5498)]