21788312

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{173}}^2$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 50573040

約数和(自身を除く): 28784728

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 173, 182, 346, 364, 692, 728, 1211, 1384, 2249, 2422, 4498, 4844, 8996, 9688, 15743, 17992, 29929, 31486, 59858, 62972, 119716, 125944, 209503, 239432, 389077, 419006, 778154, 838012, 1556308, 1676024, 2723539, 3112616, 5447078, 10894156, 21788312]

約数ペア:

[(1, 21788312), (2, 10894156), (4, 5447078), (7, 3112616), (8, 2723539), (13, 1676024), (14, 1556308), (26, 838012), (28, 778154), (52, 419006), (56, 389077), (91, 239432), (104, 209503), (173, 125944), (182, 119716), (346, 62972), (364, 59858), (692, 31486), (728, 29929), (1211, 17992), (1384, 15743), (2249, 9688), (2422, 8996), (4498, 4844)]