19880542

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{113}}^1\times {\mathrm{727}}^1$

素因数の和:864

約数の個数: 24

約数和(自身を含む): 33113808

約数和(自身を除く): 13233266

約数列:

[1, 2, 11, 22, 113, 121, 226, 242, 727, 1243, 1454, 2486, 7997, 13673, 15994, 27346, 82151, 87967, 164302, 175934, 903661, 1807322, 9940271, 19880542]

約数ペア:

[(1, 19880542), (2, 9940271), (11, 1807322), (22, 903661), (113, 175934), (121, 164302), (226, 87967), (242, 82151), (727, 27346), (1243, 15994), (1454, 13673), (2486, 7997)]