205121800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{78893}}^1$

素因数の和:78922

約数の個数: 48

約数和(自身を含む): 513599940

約数和(自身を除く): 308478140

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 78893, 157786, 315572, 394465, 631144, 788930, 1025609, 1577860, 1972325, 2051218, 3155720, 3944650, 4102436, 5128045, 7889300, 8204872, 10256090, 15778600, 20512180, 25640225, 41024360, 51280450, 102560900, 205121800]

約数ペア:

[(1, 205121800), (2, 102560900), (4, 51280450), (5, 41024360), (8, 25640225), (10, 20512180), (13, 15778600), (20, 10256090), (25, 8204872), (26, 7889300), (40, 5128045), (50, 4102436), (52, 3944650), (65, 3155720), (100, 2051218), (104, 1972325), (130, 1577860), (200, 1025609), (260, 788930), (325, 631144), (520, 394465), (650, 315572), (1300, 157786), (2600, 78893)]