256291413

素因数分解:

$3^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{13309}}^1$

素因数の和:13457

約数の個数: 24

約数和(自身を含む): 400577760

約数和(自身を除く): 144286347

約数列:

[1, 3, 7, 21, 49, 131, 147, 393, 917, 2751, 6419, 13309, 19257, 39927, 93163, 279489, 652141, 1743479, 1956423, 5230437, 12204353, 36613059, 85430471, 256291413]

約数ペア:

[(1, 256291413), (3, 85430471), (7, 36613059), (21, 12204353), (49, 5230437), (131, 1956423), (147, 1743479), (393, 652141), (917, 279489), (2751, 93163), (6419, 39927), (13309, 19257)]