21280911

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{9949}}^1$

素因数の和:10006

約数の個数: 16

約数和(自身を含む): 30566400

約数和(自身を除く): 9285489

約数列:

[1, 3, 23, 31, 69, 93, 713, 2139, 9949, 29847, 228827, 308419, 686481, 925257, 7093637, 21280911]

約数ペア:

[(1, 21280911), (3, 7093637), (23, 925257), (31, 686481), (69, 308419), (93, 228827), (713, 29847), (2139, 9949)]