81019449

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 138378240

約数和(自身を除く): 57358791

約数列:

[1, 3, 7, 9, 21, 59, 63, 71, 177, 213, 307, 413, 497, 531, 639, 921, 1239, 1491, 2149, 2763, 3717, 4189, 4473, 6447, 12567, 18113, 19341, 21797, 29323, 37701, 54339, 65391, 87969, 126791, 152579, 163017, 196173, 263907, 380373, 457737, 1141119, 1286023, 1373211, 3858069, 9002161, 11574207, 27006483, 81019449]

約数ペア:

[(1, 81019449), (3, 27006483), (7, 11574207), (9, 9002161), (21, 3858069), (59, 1373211), (63, 1286023), (71, 1141119), (177, 457737), (213, 380373), (307, 263907), (413, 196173), (497, 163017), (531, 152579), (639, 126791), (921, 87969), (1239, 65391), (1491, 54339), (2149, 37701), (2763, 29323), (3717, 21797), (4189, 19341), (4473, 18113), (6447, 12567)]