19720426

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{21863}}^1$

素因数の和:21917

約数の個数: 16

約数和(自身を含む): 33058368

約数和(自身を除く): 13337942

約数列:

[1, 2, 11, 22, 41, 82, 451, 902, 21863, 43726, 240493, 480986, 896383, 1792766, 9860213, 19720426]

約数ペア:

[(1, 19720426), (2, 9860213), (11, 1792766), (22, 896383), (41, 480986), (82, 240493), (451, 43726), (902, 21863)]