20948000

素因数分解:

$2^5\times 5^3\times {\mathrm{5237}}^1$

素因数の和:5262

約数の個数: 48

約数和(自身を含む): 51479064

約数和(自身を除く): 30531064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 5237, 10474, 20948, 26185, 41896, 52370, 83792, 104740, 130925, 167584, 209480, 261850, 418960, 523700, 654625, 837920, 1047400, 1309250, 2094800, 2618500, 4189600, 5237000, 10474000, 20948000]

約数ペア:

[(1, 20948000), (2, 10474000), (4, 5237000), (5, 4189600), (8, 2618500), (10, 2094800), (16, 1309250), (20, 1047400), (25, 837920), (32, 654625), (40, 523700), (50, 418960), (80, 261850), (100, 209480), (125, 167584), (160, 130925), (200, 104740), (250, 83792), (400, 52370), (500, 41896), (800, 26185), (1000, 20948), (2000, 10474), (4000, 5237)]