18581981

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{1327}}^1$

素因数の和:1424

約数の個数: 16

約数和(自身を含む): 21672960

約数和(自身を除く): 3090979

約数列:

[1, 11, 19, 67, 209, 737, 1273, 1327, 14003, 14597, 25213, 88909, 277343, 977999, 1689271, 18581981]

約数ペア:

[(1, 18581981), (11, 1689271), (19, 977999), (67, 277343), (209, 88909), (737, 25213), (1273, 14597), (1327, 14003)]