79955600

素因数分解:

$2^4\times 5^2\times {\mathrm{199889}}^1$

素因数の和:199907

約数の個数: 30

約数和(自身を含む): 192094290

約数和(自身を除く): 112138690

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 199889, 399778, 799556, 999445, 1599112, 1998890, 3198224, 3997780, 4997225, 7995560, 9994450, 15991120, 19988900, 39977800, 79955600]

約数ペア:

[(1, 79955600), (2, 39977800), (4, 19988900), (5, 15991120), (8, 9994450), (10, 7995560), (16, 4997225), (20, 3997780), (25, 3198224), (40, 1998890), (50, 1599112), (80, 999445), (100, 799556), (200, 399778), (400, 199889)]