21808458

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2371}}^1$

素因数の和:2459

約数の個数: 48

約数和(自身を含む): 54764736

約数和(自身を除く): 32956278

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 73, 126, 146, 219, 438, 511, 657, 1022, 1314, 1533, 2371, 3066, 4599, 4742, 7113, 9198, 14226, 16597, 21339, 33194, 42678, 49791, 99582, 149373, 173083, 298746, 346166, 519249, 1038498, 1211581, 1557747, 2423162, 3115494, 3634743, 7269486, 10904229, 21808458]

約数ペア:

[(1, 21808458), (2, 10904229), (3, 7269486), (6, 3634743), (7, 3115494), (9, 2423162), (14, 1557747), (18, 1211581), (21, 1038498), (42, 519249), (63, 346166), (73, 298746), (126, 173083), (146, 149373), (219, 99582), (438, 49791), (511, 42678), (657, 33194), (1022, 21339), (1314, 16597), (1533, 14226), (2371, 9198), (3066, 7113), (4599, 4742)]