19927523

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 26749440

約数和(自身を除く): 6821917

約数列:

[1, 7, 11, 19, 53, 77, 133, 209, 257, 371, 583, 1007, 1463, 1799, 2827, 4081, 4883, 7049, 11077, 13621, 19789, 34181, 53713, 77539, 95347, 149831, 258799, 375991, 1048817, 1811593, 2846789, 19927523]

約数ペア:

[(1, 19927523), (7, 2846789), (11, 1811593), (19, 1048817), (53, 375991), (77, 258799), (133, 149831), (209, 95347), (257, 77539), (371, 53713), (583, 34181), (1007, 19789), (1463, 13621), (1799, 11077), (2827, 7049), (4081, 4883)]