51239990

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{72169}}^1$

素因数の和:72247

約数の個数: 16

約数和(自身を含む): 93532320

約数和(自身を除く): 42292330

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 72169, 144338, 360845, 721690, 5123999, 10247998, 25619995, 51239990]

約数ペア:

[(1, 51239990), (2, 25619995), (5, 10247998), (10, 5123999), (71, 721690), (142, 360845), (355, 144338), (710, 72169)]