189981

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1$

素因数の和:137

約数の個数: 24

約数和(自身を含む): 318240

約数和(自身を除く): 128259

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 101, 171, 209, 303, 627, 909, 1111, 1881, 1919, 3333, 5757, 9999, 17271, 21109, 63327, 189981]

約数ペア:

[(1, 189981), (3, 63327), (9, 21109), (11, 17271), (19, 9999), (33, 5757), (57, 3333), (99, 1919), (101, 1881), (171, 1111), (209, 909), (303, 627)]