21020883

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{17387}}^1$

素因数の和:17434

約数の個数: 16

約数和(自身を含む): 31159296

約数和(自身を除く): 10138413

約数列:

[1, 3, 13, 31, 39, 93, 403, 1209, 17387, 52161, 226031, 538997, 678093, 1616991, 7006961, 21020883]

約数ペア:

[(1, 21020883), (3, 7006961), (13, 1616991), (31, 678093), (39, 538997), (93, 226031), (403, 52161), (1209, 17387)]