19979042

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{9241}}^1$

素因数の和:9313

約数の個数: 16

約数和(自身を含む): 31940352

約数和(自身を除く): 11961310

約数列:

[1, 2, 23, 46, 47, 94, 1081, 2162, 9241, 18482, 212543, 425086, 434327, 868654, 9989521, 19979042]

約数ペア:

[(1, 19979042), (2, 9989521), (23, 868654), (46, 434327), (47, 425086), (94, 212543), (1081, 18482), (2162, 9241)]