20709909

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{3947}}^1$

素因数の和:4017

約数の個数: 24

約数和(自身を含む): 33257952

約数和(自身を除く): 12548043

約数列:

[1, 3, 9, 11, 33, 53, 99, 159, 477, 583, 1749, 3947, 5247, 11841, 35523, 43417, 130251, 209191, 390753, 627573, 1882719, 2301101, 6903303, 20709909]

約数ペア:

[(1, 20709909), (3, 6903303), (9, 2301101), (11, 1882719), (33, 627573), (53, 390753), (99, 209191), (159, 130251), (477, 43417), (583, 35523), (1749, 11841), (3947, 5247)]