13408905

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{20789}}^1$

素因数の和:20840

約数の個数: 16

約数和(自身を含む): 21954240

約数和(自身を除く): 8545335

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 20789, 62367, 103945, 311835, 893927, 2681781, 4469635, 13408905]

約数ペア:

[(1, 13408905), (3, 4469635), (5, 2681781), (15, 893927), (43, 311835), (129, 103945), (215, 62367), (645, 20789)]