19197981

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{17}}^2\times {\mathrm{61}}^1$

素因数の和:123

約数の個数: 54

約数和(自身を含む): 32909786

約数和(自身を除く): 13711805

約数列:

[1, 3, 9, 11, 17, 33, 51, 61, 99, 121, 153, 183, 187, 289, 363, 549, 561, 671, 867, 1037, 1089, 1683, 2013, 2057, 2601, 3111, 3179, 6039, 6171, 7381, 9333, 9537, 11407, 17629, 18513, 22143, 28611, 34221, 34969, 52887, 66429, 102663, 104907, 125477, 158661, 193919, 314721, 376431, 581757, 1129293, 1745271, 2133109, 6399327, 19197981]

約数ペア:

[(1, 19197981), (3, 6399327), (9, 2133109), (11, 1745271), (17, 1129293), (33, 581757), (51, 376431), (61, 314721), (99, 193919), (121, 158661), (153, 125477), (183, 104907), (187, 102663), (289, 66429), (363, 52887), (549, 34969), (561, 34221), (671, 28611), (867, 22143), (1037, 18513), (1089, 17629), (1683, 11407), (2013, 9537), (2057, 9333), (2601, 7381), (3111, 6171), (3179, 6039)]