21217900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19289}}^1$

素因数の和:19314

約数の個数: 36

約数和(自身を含む): 50231160

約数和(自身を除く): 29013260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 19289, 38578, 77156, 96445, 192890, 212179, 385780, 424358, 482225, 848716, 964450, 1060895, 1928900, 2121790, 4243580, 5304475, 10608950, 21217900]

約数ペア:

[(1, 21217900), (2, 10608950), (4, 5304475), (5, 4243580), (10, 2121790), (11, 1928900), (20, 1060895), (22, 964450), (25, 848716), (44, 482225), (50, 424358), (55, 385780), (100, 212179), (110, 192890), (220, 96445), (275, 77156), (550, 38578), (1100, 19289)]