19394221

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 25878528

約数和(自身を除く): 6484307

約数列:

[1, 7, 11, 23, 47, 77, 161, 233, 253, 329, 517, 1081, 1631, 1771, 2563, 3619, 5359, 7567, 10951, 11891, 17941, 37513, 58949, 76657, 83237, 120461, 251873, 412643, 843227, 1763111, 2770603, 19394221]

約数ペア:

[(1, 19394221), (7, 2770603), (11, 1763111), (23, 843227), (47, 412643), (77, 251873), (161, 120461), (233, 83237), (253, 76657), (329, 58949), (517, 37513), (1081, 17941), (1631, 11891), (1771, 10951), (2563, 7567), (3619, 5359)]