21978108

素因数分解:

$2^2\times 3^3\times {\mathrm{197}}^1\times {\mathrm{1033}}^1$

素因数の和:1243

約数の個数: 48

約数和(自身を含む): 57324960

約数和(自身を除く): 35346852

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 197, 394, 591, 788, 1033, 1182, 1773, 2066, 2364, 3099, 3546, 4132, 5319, 6198, 7092, 9297, 10638, 12396, 18594, 21276, 27891, 37188, 55782, 111564, 203501, 407002, 610503, 814004, 1221006, 1831509, 2442012, 3663018, 5494527, 7326036, 10989054, 21978108]

約数ペア:

[(1, 21978108), (2, 10989054), (3, 7326036), (4, 5494527), (6, 3663018), (9, 2442012), (12, 1831509), (18, 1221006), (27, 814004), (36, 610503), (54, 407002), (108, 203501), (197, 111564), (394, 55782), (591, 37188), (788, 27891), (1033, 21276), (1182, 18594), (1773, 12396), (2066, 10638), (2364, 9297), (3099, 7092), (3546, 6198), (4132, 5319)]