8427939

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6971}}^1$

素因数の和:7018

約数の個数: 16

約数和(自身を含む): 12493824

約数和(自身を除く): 4065885

約数列:

[1, 3, 13, 31, 39, 93, 403, 1209, 6971, 20913, 90623, 216101, 271869, 648303, 2809313, 8427939]

約数ペア:

[(1, 8427939), (3, 2809313), (13, 648303), (31, 271869), (39, 216101), (93, 90623), (403, 20913), (1209, 6971)]