199900855

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^2\times {\mathrm{103}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 306289152

約数和(自身を除く): 106388297

約数列:

[1, 5, 7, 11, 35, 55, 71, 77, 103, 355, 385, 497, 515, 721, 781, 1133, 2485, 3605, 3905, 5041, 5467, 5665, 7313, 7931, 25205, 27335, 35287, 36565, 39655, 51191, 55451, 80443, 176435, 255955, 277255, 388157, 402215, 519223, 563101, 1940785, 2596115, 2815505, 3634561, 5711453, 18172805, 28557265, 39980171, 199900855]

約数ペア:

[(1, 199900855), (5, 39980171), (7, 28557265), (11, 18172805), (35, 5711453), (55, 3634561), (71, 2815505), (77, 2596115), (103, 1940785), (355, 563101), (385, 519223), (497, 402215), (515, 388157), (721, 277255), (781, 255955), (1133, 176435), (2485, 80443), (3605, 55451), (3905, 51191), (5041, 39655), (5467, 36565), (5665, 35287), (7313, 27335), (7931, 25205)]