20349250621

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{337}}^1\times {\mathrm{409}}^1$

素因数の和:914

約数の個数: 48

約数和(自身を含む): 25024222080

約数和(自身を除く): 4674971459

約数列:

[1, 7, 23, 49, 131, 161, 337, 409, 917, 1127, 2359, 2863, 3013, 6419, 7751, 9407, 16513, 20041, 21091, 44147, 53579, 54257, 65849, 137833, 147637, 309029, 375053, 379799, 460943, 964831, 1015381, 1232317, 2163203, 2625371, 3170159, 6753817, 7107667, 8626219, 18056123, 22191113, 49753669, 60383533, 126392861, 155337791, 415290829, 884750027, 2907035803, 20349250621]

約数ペア:

[(1, 20349250621), (7, 2907035803), (23, 884750027), (49, 415290829), (131, 155337791), (161, 126392861), (337, 60383533), (409, 49753669), (917, 22191113), (1127, 18056123), (2359, 8626219), (2863, 7107667), (3013, 6753817), (6419, 3170159), (7751, 2625371), (9407, 2163203), (16513, 1232317), (20041, 1015381), (21091, 964831), (44147, 460943), (53579, 379799), (54257, 375053), (65849, 309029), (137833, 147637)]