21000984021

素因数分解:

$3^3\times {\mathrm{3821}}^1\times {\mathrm{203563}}^1$

素因数の和:207393

約数の個数: 16

約数和(自身を含む): 31120864320

約数和(自身を除く): 10119880299

約数列:

[1, 3, 9, 27, 3821, 11463, 34389, 103167, 203563, 610689, 1832067, 5496201, 777814223, 2333442669, 7000328007, 21000984021]

約数ペア:

[(1, 21000984021), (3, 7000328007), (9, 2333442669), (27, 777814223), (3821, 5496201), (11463, 1832067), (34389, 610689), (103167, 203563)]