20512238480

素因数分解:

$2^4\times 5^1\times {\mathrm{683}}^1\times {\mathrm{375407}}^1$

素因数の和:376103

約数の個数: 40

約数和(自身を含む): 47760907392

約数和(自身を除く): 27248668912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 683, 1366, 2732, 3415, 5464, 6830, 10928, 13660, 27320, 54640, 375407, 750814, 1501628, 1877035, 3003256, 3754070, 6006512, 7508140, 15016280, 30032560, 256402981, 512805962, 1025611924, 1282014905, 2051223848, 2564029810, 4102447696, 5128059620, 10256119240, 20512238480]

約数ペア:

[(1, 20512238480), (2, 10256119240), (4, 5128059620), (5, 4102447696), (8, 2564029810), (10, 2051223848), (16, 1282014905), (20, 1025611924), (40, 512805962), (80, 256402981), (683, 30032560), (1366, 15016280), (2732, 7508140), (3415, 6006512), (5464, 3754070), (6830, 3003256), (10928, 1877035), (13660, 1501628), (27320, 750814), (54640, 375407)]