208067920

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1\times {\mathrm{223}}^1$

素因数の和:452

約数の個数: 80

約数和(自身を含む): 494968320

約数和(自身を除く): 286900400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 109, 214, 218, 223, 428, 436, 446, 535, 545, 856, 872, 892, 1070, 1090, 1115, 1712, 1744, 1784, 2140, 2180, 2230, 3568, 4280, 4360, 4460, 8560, 8720, 8920, 11663, 17840, 23326, 23861, 24307, 46652, 47722, 48614, 58315, 93304, 95444, 97228, 116630, 119305, 121535, 186608, 190888, 194456, 233260, 238610, 243070, 381776, 388912, 466520, 477220, 486140, 933040, 954440, 972280, 1908880, 1944560, 2600849, 5201698, 10403396, 13004245, 20806792, 26008490, 41613584, 52016980, 104033960, 208067920]

約数ペア:

[(1, 208067920), (2, 104033960), (4, 52016980), (5, 41613584), (8, 26008490), (10, 20806792), (16, 13004245), (20, 10403396), (40, 5201698), (80, 2600849), (107, 1944560), (109, 1908880), (214, 972280), (218, 954440), (223, 933040), (428, 486140), (436, 477220), (446, 466520), (535, 388912), (545, 381776), (856, 243070), (872, 238610), (892, 233260), (1070, 194456), (1090, 190888), (1115, 186608), (1712, 121535), (1744, 119305), (1784, 116630), (2140, 97228), (2180, 95444), (2230, 93304), (3568, 58315), (4280, 48614), (4360, 47722), (4460, 46652), (8560, 24307), (8720, 23861), (8920, 23326), (11663, 17840)]