19991433

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2339}}^1$

素因数の和:2397

約数の個数: 32

約数和(自身を含む): 34145280

約数和(自身を除く): 14153847

約数列:

[1, 3, 7, 11, 21, 33, 37, 77, 111, 231, 259, 407, 777, 1221, 2339, 2849, 7017, 8547, 16373, 25729, 49119, 77187, 86543, 180103, 259629, 540309, 605801, 951973, 1817403, 2855919, 6663811, 19991433]

約数ペア:

[(1, 19991433), (3, 6663811), (7, 2855919), (11, 1817403), (21, 951973), (33, 605801), (37, 540309), (77, 259629), (111, 180103), (231, 86543), (259, 77187), (407, 49119), (777, 25729), (1221, 16373), (2339, 8547), (2849, 7017)]