77737760

素因数分解:

$2^5\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1249}}^1$

素因数の和:1653

約数の個数: 48

約数和(自身を含む): 184275000

約数和(自身を除く): 106537240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 389, 778, 1249, 1556, 1945, 2498, 3112, 3890, 4996, 6224, 6245, 7780, 9992, 12448, 12490, 15560, 19984, 24980, 31120, 39968, 49960, 62240, 99920, 199840, 485861, 971722, 1943444, 2429305, 3886888, 4858610, 7773776, 9717220, 15547552, 19434440, 38868880, 77737760]

約数ペア:

[(1, 77737760), (2, 38868880), (4, 19434440), (5, 15547552), (8, 9717220), (10, 7773776), (16, 4858610), (20, 3886888), (32, 2429305), (40, 1943444), (80, 971722), (160, 485861), (389, 199840), (778, 99920), (1249, 62240), (1556, 49960), (1945, 39968), (2498, 31120), (3112, 24980), (3890, 19984), (4996, 15560), (6224, 12490), (6245, 12448), (7780, 9992)]