78171520

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{17449}}^1$

素因数の和:17475

約数の個数: 64

約数和(自身を含む): 213588000

約数和(自身を除く): 135416480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 17449, 34898, 69796, 87245, 122143, 139592, 174490, 244286, 279184, 348980, 488572, 558368, 610715, 697960, 977144, 1116736, 1221430, 1395920, 1954288, 2233472, 2442860, 2791840, 3908576, 4885720, 5583680, 7817152, 9771440, 11167360, 15634304, 19542880, 39085760, 78171520]

約数ペア:

[(1, 78171520), (2, 39085760), (4, 19542880), (5, 15634304), (7, 11167360), (8, 9771440), (10, 7817152), (14, 5583680), (16, 4885720), (20, 3908576), (28, 2791840), (32, 2442860), (35, 2233472), (40, 1954288), (56, 1395920), (64, 1221430), (70, 1116736), (80, 977144), (112, 697960), (128, 610715), (140, 558368), (160, 488572), (224, 348980), (280, 279184), (320, 244286), (448, 174490), (560, 139592), (640, 122143), (896, 87245), (1120, 69796), (2240, 34898), (4480, 17449)]