20784500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{3779}}^1$

素因数の和:3809

約数の個数: 48

約数和(自身を含む): 49533120

約数和(自身を除く): 28748620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 1100, 1375, 2750, 3779, 5500, 7558, 15116, 18895, 37790, 41569, 75580, 83138, 94475, 166276, 188950, 207845, 377900, 415690, 472375, 831380, 944750, 1039225, 1889500, 2078450, 4156900, 5196125, 10392250, 20784500]

約数ペア:

[(1, 20784500), (2, 10392250), (4, 5196125), (5, 4156900), (10, 2078450), (11, 1889500), (20, 1039225), (22, 944750), (25, 831380), (44, 472375), (50, 415690), (55, 377900), (100, 207845), (110, 188950), (125, 166276), (220, 94475), (250, 83138), (275, 75580), (500, 41569), (550, 37790), (1100, 18895), (1375, 15116), (2750, 7558), (3779, 5500)]