20153847

素因数分解:

$3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1931}}^1$

素因数の和:2019

約数の個数: 24

約数和(自身を含む): 31715712

約数和(自身を除く): 11561865

約数列:

[1, 3, 7, 21, 49, 71, 147, 213, 497, 1491, 1931, 3479, 5793, 10437, 13517, 40551, 94619, 137101, 283857, 411303, 959707, 2879121, 6717949, 20153847]

約数ペア:

[(1, 20153847), (3, 6717949), (7, 2879121), (21, 959707), (49, 411303), (71, 283857), (147, 137101), (213, 94619), (497, 40551), (1491, 13517), (1931, 10437), (3479, 5793)]