19703680

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1811}}^1$

素因数の和:1847

約数の個数: 64

約数和(自身を含む): 49902480

約数和(自身を除く): 30198800

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 272, 320, 340, 544, 640, 680, 1088, 1360, 1811, 2176, 2720, 3622, 5440, 7244, 9055, 10880, 14488, 18110, 28976, 30787, 36220, 57952, 61574, 72440, 115904, 123148, 144880, 153935, 231808, 246296, 289760, 307870, 492592, 579520, 615740, 985184, 1159040, 1231480, 1970368, 2462960, 3940736, 4925920, 9851840, 19703680]

約数ペア:

[(1, 19703680), (2, 9851840), (4, 4925920), (5, 3940736), (8, 2462960), (10, 1970368), (16, 1231480), (17, 1159040), (20, 985184), (32, 615740), (34, 579520), (40, 492592), (64, 307870), (68, 289760), (80, 246296), (85, 231808), (128, 153935), (136, 144880), (160, 123148), (170, 115904), (272, 72440), (320, 61574), (340, 57952), (544, 36220), (640, 30787), (680, 28976), (1088, 18110), (1360, 14488), (1811, 10880), (2176, 9055), (2720, 7244), (3622, 5440)]