21559993

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{10301}}^1$

素因数の和:10344

約数の個数: 16

約数和(自身を含む): 27691776

約数和(自身を除く): 6131783

約数列:

[1, 7, 13, 23, 91, 161, 299, 2093, 10301, 72107, 133913, 236923, 937391, 1658461, 3079999, 21559993]

約数ペア:

[(1, 21559993), (7, 3079999), (13, 1658461), (23, 937391), (91, 236923), (161, 133913), (299, 72107), (2093, 10301)]