21150423

素因数分解:

$3^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2381}}^1$

素因数の和:2444

約数の個数: 32

約数和(自身を含む): 36587520

約数和(自身を除く): 15437097

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 141, 189, 329, 423, 987, 1269, 2381, 2961, 7143, 8883, 16667, 21429, 50001, 64287, 111907, 150003, 335721, 450009, 783349, 1007163, 2350047, 3021489, 7050141, 21150423]

約数ペア:

[(1, 21150423), (3, 7050141), (7, 3021489), (9, 2350047), (21, 1007163), (27, 783349), (47, 450009), (63, 335721), (141, 150003), (189, 111907), (329, 64287), (423, 50001), (987, 21429), (1269, 16667), (2381, 8883), (2961, 7143)]