21660548

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{8501}}^1$

素因数の和:8532

約数の個数: 36

約数和(自身を含む): 47492172

約数和(自身を除く): 25831624

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 364, 637, 1274, 2548, 8501, 17002, 34004, 59507, 110513, 119014, 221026, 238028, 416549, 442052, 773591, 833098, 1547182, 1666196, 3094364, 5415137, 10830274, 21660548]

約数ペア:

[(1, 21660548), (2, 10830274), (4, 5415137), (7, 3094364), (13, 1666196), (14, 1547182), (26, 833098), (28, 773591), (49, 442052), (52, 416549), (91, 238028), (98, 221026), (182, 119014), (196, 110513), (364, 59507), (637, 34004), (1274, 17002), (2548, 8501)]