21189856

素因数分解:

$2^5\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{193}}^1$

素因数の和:323

約数の個数: 48

約数和(自身を含む): 43412544

約数和(自身を除く): 22222688

約数列:

[1, 2, 4, 8, 16, 32, 47, 73, 94, 146, 188, 193, 292, 376, 386, 584, 752, 772, 1168, 1504, 1544, 2336, 3088, 3431, 6176, 6862, 9071, 13724, 14089, 18142, 27448, 28178, 36284, 54896, 56356, 72568, 109792, 112712, 145136, 225424, 290272, 450848, 662183, 1324366, 2648732, 5297464, 10594928, 21189856]

約数ペア:

[(1, 21189856), (2, 10594928), (4, 5297464), (8, 2648732), (16, 1324366), (32, 662183), (47, 450848), (73, 290272), (94, 225424), (146, 145136), (188, 112712), (193, 109792), (292, 72568), (376, 56356), (386, 54896), (584, 36284), (752, 28178), (772, 27448), (1168, 18142), (1504, 14089), (1544, 13724), (2336, 9071), (3088, 6862), (3431, 6176)]