21259611

素因数分解:

$3^3\times {\mathrm{79}}^1\times {\mathrm{9967}}^1$

素因数の和:10055

約数の個数: 16

約数和(自身を含む): 31897600

約数和(自身を除く): 10637989

約数列:

[1, 3, 9, 27, 79, 237, 711, 2133, 9967, 29901, 89703, 269109, 787393, 2362179, 7086537, 21259611]

約数ペア:

[(1, 21259611), (3, 7086537), (9, 2362179), (27, 787393), (79, 269109), (237, 89703), (711, 29901), (2133, 9967)]