21145317

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1\times {\mathrm{839}}^1$

素因数の和:1144

約数の個数: 16

約数和(自身を含む): 29245440

約数和(自身を除く): 8100123

約数列:

[1, 3, 31, 93, 271, 813, 839, 2517, 8401, 25203, 26009, 78027, 227369, 682107, 7048439, 21145317]

約数ペア:

[(1, 21145317), (3, 7048439), (31, 682107), (93, 227369), (271, 78027), (813, 26009), (839, 25203), (2517, 8401)]