21785031

素因数分解:

$3^4\times {\mathrm{449}}^1\times {\mathrm{599}}^1$

素因数の和:1060

約数の個数: 20

約数和(自身を含む): 32670000

約数和(自身を除く): 10884969

約数列:

[1, 3, 9, 27, 81, 449, 599, 1347, 1797, 4041, 5391, 12123, 16173, 36369, 48519, 268951, 806853, 2420559, 7261677, 21785031]

約数ペア:

[(1, 21785031), (3, 7261677), (9, 2420559), (27, 806853), (81, 268951), (449, 48519), (599, 36369), (1347, 16173), (1797, 12123), (4041, 5391)]