78181980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{76649}}^1$

素因数の和:76678

約数の個数: 48

約数和(自身を含む): 231789600

約数和(自身を除く): 153607620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 76649, 153298, 229947, 306596, 383245, 459894, 766490, 919788, 1149735, 1303033, 1532980, 2299470, 2606066, 3909099, 4598940, 5212132, 6515165, 7818198, 13030330, 15636396, 19545495, 26060660, 39090990, 78181980]

約数ペア:

[(1, 78181980), (2, 39090990), (3, 26060660), (4, 19545495), (5, 15636396), (6, 13030330), (10, 7818198), (12, 6515165), (15, 5212132), (17, 4598940), (20, 3909099), (30, 2606066), (34, 2299470), (51, 1532980), (60, 1303033), (68, 1149735), (85, 919788), (102, 766490), (170, 459894), (204, 383245), (255, 306596), (340, 229947), (510, 153298), (1020, 76649)]