21318669

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1777}}^1$

素因数の和:1857

約数の個数: 24

約数和(自身を含む): 32544512

約数和(自身を除く): 11225843

約数列:

[1, 3, 9, 31, 43, 93, 129, 279, 387, 1333, 1777, 3999, 5331, 11997, 15993, 55087, 76411, 165261, 229233, 495783, 687699, 2368741, 7106223, 21318669]

約数ペア:

[(1, 21318669), (3, 7106223), (9, 2368741), (31, 687699), (43, 495783), (93, 229233), (129, 165261), (279, 76411), (387, 55087), (1333, 15993), (1777, 11997), (3999, 5331)]