19810728

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1709}}^1$

素因数の和:1751

約数の個数: 96

約数和(自身を含む): 64022400

約数和(自身を除く): 44211672

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 23, 24, 28, 36, 42, 46, 56, 63, 69, 72, 84, 92, 126, 138, 161, 168, 184, 207, 252, 276, 322, 414, 483, 504, 552, 644, 828, 966, 1288, 1449, 1656, 1709, 1932, 2898, 3418, 3864, 5127, 5796, 6836, 10254, 11592, 11963, 13672, 15381, 20508, 23926, 30762, 35889, 39307, 41016, 47852, 61524, 71778, 78614, 95704, 107667, 117921, 123048, 143556, 157228, 215334, 235842, 275149, 287112, 314456, 353763, 430668, 471684, 550298, 707526, 825447, 861336, 943368, 1100596, 1415052, 1650894, 2201192, 2476341, 2830104, 3301788, 4952682, 6603576, 9905364, 19810728]

約数ペア:

[(1, 19810728), (2, 9905364), (3, 6603576), (4, 4952682), (6, 3301788), (7, 2830104), (8, 2476341), (9, 2201192), (12, 1650894), (14, 1415052), (18, 1100596), (21, 943368), (23, 861336), (24, 825447), (28, 707526), (36, 550298), (42, 471684), (46, 430668), (56, 353763), (63, 314456), (69, 287112), (72, 275149), (84, 235842), (92, 215334), (126, 157228), (138, 143556), (161, 123048), (168, 117921), (184, 107667), (207, 95704), (252, 78614), (276, 71778), (322, 61524), (414, 47852), (483, 41016), (504, 39307), (552, 35889), (644, 30762), (828, 23926), (966, 20508), (1288, 15381), (1449, 13672), (1656, 11963), (1709, 11592), (1932, 10254), (2898, 6836), (3418, 5796), (3864, 5127)]