209916903

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{2539}}^1$

素因数の和:2707

約数の個数: 32

約数和(自身を含む): 332922880

約数和(自身を除く): 123005977

約数列:

[1, 3, 7, 21, 31, 93, 127, 217, 381, 651, 889, 2539, 2667, 3937, 7617, 11811, 17773, 27559, 53319, 78709, 82677, 236127, 322453, 550963, 967359, 1652889, 2257171, 6771513, 9996043, 29988129, 69972301, 209916903]

約数ペア:

[(1, 209916903), (3, 69972301), (7, 29988129), (21, 9996043), (31, 6771513), (93, 2257171), (127, 1652889), (217, 967359), (381, 550963), (651, 322453), (889, 236127), (2539, 82677), (2667, 78709), (3937, 53319), (7617, 27559), (11811, 17773)]