19980821487

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{317171}}^1$

素因数の和:317291

約数の個数: 32

約数和(自身を含む): 30692100096

約数和(自身を除く): 10711278609

約数列:

[1, 3, 11, 23, 33, 69, 83, 249, 253, 759, 913, 1909, 2739, 5727, 20999, 62997, 317171, 951513, 3488881, 7294933, 10466643, 21884799, 26325193, 78975579, 80244263, 240732789, 289577123, 605479439, 868731369, 1816438317, 6660273829, 19980821487]

約数ペア:

[(1, 19980821487), (3, 6660273829), (11, 1816438317), (23, 868731369), (33, 605479439), (69, 289577123), (83, 240732789), (249, 80244263), (253, 78975579), (759, 26325193), (913, 21884799), (1909, 10466643), (2739, 7294933), (5727, 3488881), (20999, 951513), (62997, 317171)]