13218905

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{16421}}^1$

素因数の和:16456

約数の個数: 16

約数和(自身を含む): 18918144

約数和(自身を除く): 5699239

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 16421, 82105, 114947, 377683, 574735, 1888415, 2643781, 13218905]

約数ペア:

[(1, 13218905), (5, 2643781), (7, 1888415), (23, 574735), (35, 377683), (115, 114947), (161, 82105), (805, 16421)]