2561979

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{6421}}^1$

素因数の和:6450

約数の個数: 16

約数和(自身を含む): 4110080

約数和(自身を除く): 1548101

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 6421, 19263, 44947, 121999, 134841, 365997, 853993, 2561979]

約数ペア:

[(1, 2561979), (3, 853993), (7, 365997), (19, 134841), (21, 121999), (57, 44947), (133, 19263), (399, 6421)]