19489421

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 25190400

約数和(自身を除く): 5700979

約数列:

[1, 7, 19, 29, 31, 133, 163, 203, 217, 551, 589, 899, 1141, 3097, 3857, 4123, 4727, 5053, 6293, 17081, 21679, 33089, 35371, 89813, 96007, 119567, 146537, 628691, 672049, 1025759, 2784203, 19489421]

約数ペア:

[(1, 19489421), (7, 2784203), (19, 1025759), (29, 672049), (31, 628691), (133, 146537), (163, 119567), (203, 96007), (217, 89813), (551, 35371), (589, 33089), (899, 21679), (1141, 17081), (3097, 6293), (3857, 5053), (4123, 4727)]