20515166

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{20639}}^1$

素因数の和:20719

約数の個数: 16

約数和(自身を含む): 35665920

約数和(自身を除く): 15150754

約数列:

[1, 2, 7, 14, 71, 142, 497, 994, 20639, 41278, 144473, 288946, 1465369, 2930738, 10257583, 20515166]

約数ペア:

[(1, 20515166), (2, 10257583), (7, 2930738), (14, 1465369), (71, 288946), (142, 144473), (497, 41278), (994, 20639)]