18278001

素因数分解:

$3^3\times 7^1\times {\mathrm{97}}^1\times {\mathrm{997}}^1$

素因数の和:1110

約数の個数: 32

約数和(自身を含む): 31297280

約数和(自身を除く): 13019279

約数列:

[1, 3, 7, 9, 21, 27, 63, 97, 189, 291, 679, 873, 997, 2037, 2619, 2991, 6111, 6979, 8973, 18333, 20937, 26919, 62811, 96709, 188433, 290127, 676963, 870381, 2030889, 2611143, 6092667, 18278001]

約数ペア:

[(1, 18278001), (3, 6092667), (7, 2611143), (9, 2030889), (21, 870381), (27, 676963), (63, 290127), (97, 188433), (189, 96709), (291, 62811), (679, 26919), (873, 20937), (997, 18333), (2037, 8973), (2619, 6979), (2991, 6111)]