21140105

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{26261}}^1$

素因数の和:26296

約数の個数: 16

約数和(自身を含む): 30253824

約数和(自身を除く): 9113719

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 26261, 131305, 183827, 604003, 919135, 3020015, 4228021, 21140105]

約数ペア:

[(1, 21140105), (5, 4228021), (7, 3020015), (23, 919135), (35, 604003), (115, 183827), (161, 131305), (805, 26261)]