81335541

素因数分解:

$3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{7793}}^1$

素因数の和:7881

約数の個数: 24

約数和(自身を含む): 127946304

約数和(自身を除く): 46610763

約数列:

[1, 3, 7, 21, 49, 71, 147, 213, 497, 1491, 3479, 7793, 10437, 23379, 54551, 163653, 381857, 553303, 1145571, 1659909, 3873121, 11619363, 27111847, 81335541]

約数ペア:

[(1, 81335541), (3, 27111847), (7, 11619363), (21, 3873121), (49, 1659909), (71, 1145571), (147, 553303), (213, 381857), (497, 163653), (1491, 54551), (3479, 23379), (7793, 10437)]