20704187

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{1307}}^1$

素因数の和:1418

約数の個数: 16

約数和(自身を含む): 24778752

約数和(自身を除く): 4074565

約数列:

[1, 7, 31, 73, 217, 511, 1307, 2263, 9149, 15841, 40517, 95411, 283619, 667877, 2957741, 20704187]

約数ペア:

[(1, 20704187), (7, 2957741), (31, 667877), (73, 283619), (217, 95411), (511, 40517), (1307, 15841), (2263, 9149)]