21618387

素因数分解:

$3^3\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1069}}^1$

素因数の和:1192

約数の個数: 32

約数和(自身を含む): 36979200

約数和(自身を除く): 15360813

約数列:

[1, 3, 7, 9, 21, 27, 63, 107, 189, 321, 749, 963, 1069, 2247, 2889, 3207, 6741, 7483, 9621, 20223, 22449, 28863, 67347, 114383, 202041, 343149, 800681, 1029447, 2402043, 3088341, 7206129, 21618387]

約数ペア:

[(1, 21618387), (3, 7206129), (7, 3088341), (9, 2402043), (21, 1029447), (27, 800681), (63, 343149), (107, 202041), (189, 114383), (321, 67347), (749, 28863), (963, 22449), (1069, 20223), (2247, 9621), (2889, 7483), (3207, 6741)]