21554834399

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{643}}^1\times {\mathrm{208213}}^1$

素因数の和:208886

約数の個数: 16

約数和(自身を含む): 25745244672

約数和(自身を除く): 4190410273

約数列:

[1, 7, 23, 161, 643, 4501, 14789, 103523, 208213, 1457491, 4788899, 33522293, 133880959, 937166713, 3079262057, 21554834399]

約数ペア:

[(1, 21554834399), (7, 3079262057), (23, 937166713), (161, 133880959), (643, 33522293), (4501, 4788899), (14789, 1457491), (103523, 208213)]