399159145

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{4003}}^1$

素因数の和:4070

約数の個数: 48

約数和(自身を含む): 624431808

約数和(自身を除く): 225272663

約数列:

[1, 5, 7, 11, 35, 37, 49, 55, 77, 185, 245, 259, 385, 407, 539, 1295, 1813, 2035, 2695, 2849, 4003, 9065, 14245, 19943, 20015, 28021, 44033, 99715, 140105, 148111, 196147, 220165, 308231, 740555, 980735, 1036777, 1541155, 1629221, 2157617, 5183885, 7257439, 8146105, 10788085, 11404547, 36287195, 57022735, 79831829, 399159145]

約数ペア:

[(1, 399159145), (5, 79831829), (7, 57022735), (11, 36287195), (35, 11404547), (37, 10788085), (49, 8146105), (55, 7257439), (77, 5183885), (185, 2157617), (245, 1629221), (259, 1541155), (385, 1036777), (407, 980735), (539, 740555), (1295, 308231), (1813, 220165), (2035, 196147), (2695, 148111), (2849, 140105), (4003, 99715), (9065, 44033), (14245, 28021), (19943, 20015)]