20809912641

素因数分解:

$3^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{6562571}}^1$

素因数の和:6562732

約数の個数: 16

約数和(自身を含む): 31920350208

約数和(自身を除く): 11110437567

約数列:

[1, 3, 7, 21, 151, 453, 1057, 3171, 6562571, 19687713, 45937997, 137813991, 990948221, 2972844663, 6936637547, 20809912641]

約数ペア:

[(1, 20809912641), (3, 6936637547), (7, 2972844663), (21, 990948221), (151, 137813991), (453, 45937997), (1057, 19687713), (3171, 6562571)]