19820563

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{241}}^1\times {\mathrm{379}}^1$

素因数の和:658

約数の個数: 16

約数和(自身を含む): 23541760

約数和(自身を除く): 3721197

約数列:

[1, 7, 31, 217, 241, 379, 1687, 2653, 7471, 11749, 52297, 82243, 91339, 639373, 2831509, 19820563]

約数ペア:

[(1, 19820563), (7, 2831509), (31, 639373), (217, 91339), (241, 82243), (379, 52297), (1687, 11749), (2653, 7471)]