21974000

素因数分解:

$2^4\times 5^3\times {\mathrm{10987}}^1$

素因数の和:11010

約数の個数: 40

約数和(自身を含む): 53137968

約数和(自身を除く): 31163968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10987, 21974, 43948, 54935, 87896, 109870, 175792, 219740, 274675, 439480, 549350, 878960, 1098700, 1373375, 2197400, 2746750, 4394800, 5493500, 10987000, 21974000]

約数ペア:

[(1, 21974000), (2, 10987000), (4, 5493500), (5, 4394800), (8, 2746750), (10, 2197400), (16, 1373375), (20, 1098700), (25, 878960), (40, 549350), (50, 439480), (80, 274675), (100, 219740), (125, 175792), (200, 109870), (250, 87896), (400, 54935), (500, 43948), (1000, 21974), (2000, 10987)]