388675600

素因数分解:

$2^4\times 5^2\times {\mathrm{491}}^1\times {\mathrm{1979}}^1$

素因数の和:2488

約数の個数: 60

約数和(自身を含む): 936167760

約数和(自身を除く): 547492160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 491, 982, 1964, 1979, 2455, 3928, 3958, 4910, 7856, 7916, 9820, 9895, 12275, 15832, 19640, 19790, 24550, 31664, 39280, 39580, 49100, 49475, 79160, 98200, 98950, 158320, 196400, 197900, 395800, 791600, 971689, 1943378, 3886756, 4858445, 7773512, 9716890, 15547024, 19433780, 24292225, 38867560, 48584450, 77735120, 97168900, 194337800, 388675600]

約数ペア:

[(1, 388675600), (2, 194337800), (4, 97168900), (5, 77735120), (8, 48584450), (10, 38867560), (16, 24292225), (20, 19433780), (25, 15547024), (40, 9716890), (50, 7773512), (80, 4858445), (100, 3886756), (200, 1943378), (400, 971689), (491, 791600), (982, 395800), (1964, 197900), (1979, 196400), (2455, 158320), (3928, 98950), (3958, 98200), (4910, 79160), (7856, 49475), (7916, 49100), (9820, 39580), (9895, 39280), (12275, 31664), (15832, 24550), (19640, 19790)]