20550040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3191}}^1$

素因数の和:3232

約数の個数: 64

約数和(自身を含む): 55157760

約数和(自身を除く): 34607720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3191, 3220, 6382, 6440, 12764, 15955, 22337, 25528, 31910, 44674, 63820, 73393, 89348, 111685, 127640, 146786, 178696, 223370, 293572, 366965, 446740, 513751, 587144, 733930, 893480, 1027502, 1467860, 2055004, 2568755, 2935720, 4110008, 5137510, 10275020, 20550040]

約数ペア:

[(1, 20550040), (2, 10275020), (4, 5137510), (5, 4110008), (7, 2935720), (8, 2568755), (10, 2055004), (14, 1467860), (20, 1027502), (23, 893480), (28, 733930), (35, 587144), (40, 513751), (46, 446740), (56, 366965), (70, 293572), (92, 223370), (115, 178696), (140, 146786), (161, 127640), (184, 111685), (230, 89348), (280, 73393), (322, 63820), (460, 44674), (644, 31910), (805, 25528), (920, 22337), (1288, 15955), (1610, 12764), (3191, 6440), (3220, 6382)]