20379590

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:250

約数の個数: 96

約数和(自身を含む): 49248000

約数和(自身を除く): 28868410

約数列:

[1, 2, 5, 7, 10, 11, 14, 19, 22, 35, 38, 49, 55, 70, 77, 95, 98, 110, 133, 154, 190, 199, 209, 245, 266, 385, 398, 418, 490, 539, 665, 770, 931, 995, 1045, 1078, 1330, 1393, 1463, 1862, 1990, 2090, 2189, 2695, 2786, 2926, 3781, 4378, 4655, 5390, 6965, 7315, 7562, 9310, 9751, 10241, 10945, 13930, 14630, 15323, 18905, 19502, 20482, 21890, 26467, 30646, 37810, 41591, 48755, 51205, 52934, 76615, 83182, 97510, 102410, 107261, 132335, 153230, 185269, 207955, 214522, 264670, 291137, 370538, 415910, 536305, 582274, 926345, 1072610, 1455685, 1852690, 2037959, 2911370, 4075918, 10189795, 20379590]

約数ペア:

[(1, 20379590), (2, 10189795), (5, 4075918), (7, 2911370), (10, 2037959), (11, 1852690), (14, 1455685), (19, 1072610), (22, 926345), (35, 582274), (38, 536305), (49, 415910), (55, 370538), (70, 291137), (77, 264670), (95, 214522), (98, 207955), (110, 185269), (133, 153230), (154, 132335), (190, 107261), (199, 102410), (209, 97510), (245, 83182), (266, 76615), (385, 52934), (398, 51205), (418, 48755), (490, 41591), (539, 37810), (665, 30646), (770, 26467), (931, 21890), (995, 20482), (1045, 19502), (1078, 18905), (1330, 15323), (1393, 14630), (1463, 13930), (1862, 10945), (1990, 10241), (2090, 9751), (2189, 9310), (2695, 7562), (2786, 7315), (2926, 6965), (3781, 5390), (4378, 4655)]