21704508

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2003}}^1$

素因数の和:2063

約数の個数: 72

約数和(自身を含む): 64192128

約数和(自身を除く): 42487620

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 43, 63, 84, 86, 126, 129, 172, 252, 258, 301, 387, 516, 602, 774, 903, 1204, 1548, 1806, 2003, 2709, 3612, 4006, 5418, 6009, 8012, 10836, 12018, 14021, 18027, 24036, 28042, 36054, 42063, 56084, 72108, 84126, 86129, 126189, 168252, 172258, 252378, 258387, 344516, 504756, 516774, 602903, 775161, 1033548, 1205806, 1550322, 1808709, 2411612, 3100644, 3617418, 5426127, 7234836, 10852254, 21704508]

約数ペア:

[(1, 21704508), (2, 10852254), (3, 7234836), (4, 5426127), (6, 3617418), (7, 3100644), (9, 2411612), (12, 1808709), (14, 1550322), (18, 1205806), (21, 1033548), (28, 775161), (36, 602903), (42, 516774), (43, 504756), (63, 344516), (84, 258387), (86, 252378), (126, 172258), (129, 168252), (172, 126189), (252, 86129), (258, 84126), (301, 72108), (387, 56084), (516, 42063), (602, 36054), (774, 28042), (903, 24036), (1204, 18027), (1548, 14021), (1806, 12018), (2003, 10836), (2709, 8012), (3612, 6009), (4006, 5418)]