19978706

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53419}}^1$

素因数の和:53449

約数の個数: 16

約数和(自身を含む): 34616160

約数和(自身を除く): 14637454

約数列:

[1, 2, 11, 17, 22, 34, 187, 374, 53419, 106838, 587609, 908123, 1175218, 1816246, 9989353, 19978706]

約数ペア:

[(1, 19978706), (2, 9989353), (11, 1816246), (17, 1175218), (22, 908123), (34, 587609), (187, 106838), (374, 53419)]