21709926

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4007}}^1$

素因数の和:4065

約数の個数: 48

約数和(自身を含む): 55021824

約数和(自身を除く): 33311898

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 43, 63, 86, 126, 129, 258, 301, 387, 602, 774, 903, 1806, 2709, 4007, 5418, 8014, 12021, 24042, 28049, 36063, 56098, 72126, 84147, 168294, 172301, 252441, 344602, 504882, 516903, 1033806, 1206107, 1550709, 2412214, 3101418, 3618321, 7236642, 10854963, 21709926]

約数ペア:

[(1, 21709926), (2, 10854963), (3, 7236642), (6, 3618321), (7, 3101418), (9, 2412214), (14, 1550709), (18, 1206107), (21, 1033806), (42, 516903), (43, 504882), (63, 344602), (86, 252441), (126, 172301), (129, 168294), (258, 84147), (301, 72126), (387, 56098), (602, 36063), (774, 28049), (903, 24042), (1806, 12021), (2709, 8014), (4007, 5418)]