21660231

素因数分解:

$3^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1\times {\mathrm{409}}^1$

素因数の和:678

約数の個数: 16

約数和(自身を含む): 29388800

約数和(自身を除く): 7728569

約数列:

[1, 3, 127, 139, 381, 409, 417, 1227, 17653, 51943, 52959, 56851, 155829, 170553, 7220077, 21660231]

約数ペア:

[(1, 21660231), (3, 7220077), (127, 170553), (139, 155829), (381, 56851), (409, 52959), (417, 51943), (1227, 17653)]