208438520

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{47807}}^1$

素因数の和:47927

約数の個数: 32

約数和(自身を含む): 473299200

約数和(自身を除く): 264860680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 47807, 95614, 191228, 239035, 382456, 478070, 956140, 1912280, 5210963, 10421926, 20843852, 26054815, 41687704, 52109630, 104219260, 208438520]

約数ペア:

[(1, 208438520), (2, 104219260), (4, 52109630), (5, 41687704), (8, 26054815), (10, 20843852), (20, 10421926), (40, 5210963), (109, 1912280), (218, 956140), (436, 478070), (545, 382456), (872, 239035), (1090, 191228), (2180, 95614), (4360, 47807)]