21009423

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{1367}}^1$

素因数の和:1526

約数の個数: 16

約数和(自身を含む): 28892160

約数和(自身を除く): 7882737

約数列:

[1, 3, 47, 109, 141, 327, 1367, 4101, 5123, 15369, 64249, 149003, 192747, 447009, 7003141, 21009423]

約数ペア:

[(1, 21009423), (3, 7003141), (47, 447009), (109, 192747), (141, 149003), (327, 64249), (1367, 15369), (4101, 5123)]