21128179968016

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{383}}^1\times {\mathrm{7289239}}^1$

素因数の和:7289684

約数の個数: 80

約数和(自身を含む): 45815147642880

約数和(自身を除く): 24686967674864

約数列:

[1, 2, 4, 8, 11, 16, 22, 43, 44, 86, 88, 172, 176, 344, 383, 473, 688, 766, 946, 1532, 1892, 3064, 3784, 4213, 6128, 7568, 8426, 16469, 16852, 32938, 33704, 65876, 67408, 131752, 181159, 263504, 362318, 724636, 1449272, 2898544, 7289239, 14578478, 29156956, 58313912, 80181629, 116627824, 160363258, 313437277, 320726516, 626874554, 641453032, 1253749108, 1282906064, 2507498216, 2791778537, 3447810047, 5014996432, 5583557074, 6895620094, 11167114148, 13791240188, 22334228296, 27582480376, 30709563907, 44668456592, 55164960752, 61419127814, 120046477091, 122838255628, 240092954182, 245676511256, 480185908364, 491353022512, 960371816728, 1320511248001, 1920743633456, 2641022496002, 5282044992004, 10564089984008, 21128179968016]

約数ペア:

[(1, 21128179968016), (2, 10564089984008), (4, 5282044992004), (8, 2641022496002), (11, 1920743633456), (16, 1320511248001), (22, 960371816728), (43, 491353022512), (44, 480185908364), (86, 245676511256), (88, 240092954182), (172, 122838255628), (176, 120046477091), (344, 61419127814), (383, 55164960752), (473, 44668456592), (688, 30709563907), (766, 27582480376), (946, 22334228296), (1532, 13791240188), (1892, 11167114148), (3064, 6895620094), (3784, 5583557074), (4213, 5014996432), (6128, 3447810047), (7568, 2791778537), (8426, 2507498216), (16469, 1282906064), (16852, 1253749108), (32938, 641453032), (33704, 626874554), (65876, 320726516), (67408, 313437277), (131752, 160363258), (181159, 116627824), (263504, 80181629), (362318, 58313912), (724636, 29156956), (1449272, 14578478), (2898544, 7289239)]