18740943

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{499}}^1$

素因数の和:628

約数の個数: 32

約数和(自身を含む): 30240000

約数和(自身を除く): 11499057

約数列:

[1, 3, 9, 13, 27, 39, 107, 117, 321, 351, 499, 963, 1391, 1497, 2889, 4173, 4491, 6487, 12519, 13473, 19461, 37557, 53393, 58383, 160179, 175149, 480537, 694109, 1441611, 2082327, 6246981, 18740943]

約数ペア:

[(1, 18740943), (3, 6246981), (9, 2082327), (13, 1441611), (27, 694109), (39, 480537), (107, 175149), (117, 160179), (321, 58383), (351, 53393), (499, 37557), (963, 19461), (1391, 13473), (1497, 12519), (2889, 6487), (4173, 4491)]