19500481

素因数分解:

$7^2\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1$

素因数の和:83

約数の個数: 48

約数和(自身を含む): 28038528

約数和(自身を除く): 8538047

約数列:

[1, 7, 11, 13, 23, 49, 77, 91, 121, 143, 161, 253, 299, 539, 637, 847, 1001, 1127, 1331, 1573, 1771, 2093, 2783, 3289, 5929, 7007, 9317, 11011, 12397, 14651, 17303, 19481, 23023, 30613, 36179, 65219, 77077, 121121, 136367, 161161, 214291, 253253, 397969, 847847, 1500037, 1772771, 2785783, 19500481]

約数ペア:

[(1, 19500481), (7, 2785783), (11, 1772771), (13, 1500037), (23, 847847), (49, 397969), (77, 253253), (91, 214291), (121, 161161), (143, 136367), (161, 121121), (253, 77077), (299, 65219), (539, 36179), (637, 30613), (847, 23023), (1001, 19481), (1127, 17303), (1331, 14651), (1573, 12397), (1771, 11011), (2093, 9317), (2783, 7007), (3289, 5929)]