21630539

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1\times {\mathrm{283}}^1$

素因数の和:530

約数の個数: 16

約数和(自身を含む): 25355520

約数和(自身を除く): 3724981

約数列:

[1, 7, 61, 179, 283, 427, 1253, 1981, 10919, 17263, 50657, 76433, 120841, 354599, 3090077, 21630539]

約数ペア:

[(1, 21630539), (7, 3090077), (61, 354599), (179, 120841), (283, 76433), (427, 50657), (1253, 17263), (1981, 10919)]