21068019

素因数分解:

$3^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{509}}^1$

素因数の和:601

約数の個数: 40

約数和(自身を含む): 36532320

約数和(自身を除く): 15464301

約数列:

[1, 3, 7, 9, 21, 27, 63, 73, 81, 189, 219, 509, 511, 567, 657, 1527, 1533, 1971, 3563, 4581, 4599, 5913, 10689, 13743, 13797, 32067, 37157, 41229, 41391, 96201, 111471, 260099, 288603, 334413, 780297, 1003239, 2340891, 3009717, 7022673, 21068019]

約数ペア:

[(1, 21068019), (3, 7022673), (7, 3009717), (9, 2340891), (21, 1003239), (27, 780297), (63, 334413), (73, 288603), (81, 260099), (189, 111471), (219, 96201), (509, 41391), (511, 41229), (567, 37157), (657, 32067), (1527, 13797), (1533, 13743), (1971, 10689), (3563, 5913), (4581, 4599)]