21347541

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{463}}^1$

素因数の和:625

約数の個数: 24

約数和(自身を含む): 31848960

約数和(自身を除く): 10501419

約数列:

[1, 3, 9, 47, 109, 141, 327, 423, 463, 981, 1389, 4167, 5123, 15369, 21761, 46107, 50467, 65283, 151401, 195849, 454203, 2371949, 7115847, 21347541]

約数ペア:

[(1, 21347541), (3, 7115847), (9, 2371949), (47, 454203), (109, 195849), (141, 151401), (327, 65283), (423, 50467), (463, 46107), (981, 21761), (1389, 15369), (4167, 5123)]