21309768

素因数分解:

$2^3\times 3^2\times {\mathrm{43}}^1\times {\mathrm{6883}}^1$

素因数の和:6938

約数の個数: 48

約数和(自身を含む): 59064720

約数和(自身を除く): 37754952

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 43, 72, 86, 129, 172, 258, 344, 387, 516, 774, 1032, 1548, 3096, 6883, 13766, 20649, 27532, 41298, 55064, 61947, 82596, 123894, 165192, 247788, 295969, 495576, 591938, 887907, 1183876, 1775814, 2367752, 2663721, 3551628, 5327442, 7103256, 10654884, 21309768]

約数ペア:

[(1, 21309768), (2, 10654884), (3, 7103256), (4, 5327442), (6, 3551628), (8, 2663721), (9, 2367752), (12, 1775814), (18, 1183876), (24, 887907), (36, 591938), (43, 495576), (72, 295969), (86, 247788), (129, 165192), (172, 123894), (258, 82596), (344, 61947), (387, 55064), (516, 41298), (774, 27532), (1032, 20649), (1548, 13766), (3096, 6883)]