21782151

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 35942400

約数和(自身を除く): 14160249

約数列:

[1, 3, 9, 17, 19, 51, 57, 59, 127, 153, 171, 177, 323, 381, 531, 969, 1003, 1121, 1143, 2159, 2413, 2907, 3009, 3363, 6477, 7239, 7493, 9027, 10089, 19057, 19431, 21717, 22479, 41021, 57171, 67437, 123063, 127381, 142367, 171513, 369189, 382143, 427101, 1146429, 1281303, 2420239, 7260717, 21782151]

約数ペア:

[(1, 21782151), (3, 7260717), (9, 2420239), (17, 1281303), (19, 1146429), (51, 427101), (57, 382143), (59, 369189), (127, 171513), (153, 142367), (171, 127381), (177, 123063), (323, 67437), (381, 57171), (531, 41021), (969, 22479), (1003, 21717), (1121, 19431), (1143, 19057), (2159, 10089), (2413, 9027), (2907, 7493), (3009, 7239), (3363, 6477)]