20691783

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{6197}}^1$

素因数の和:6263

約数の個数: 24

約数和(自身を含む): 34807968

約数和(自身を除く): 14116185

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 6197, 18591, 43379, 55773, 130137, 328441, 390411, 985323, 2299087, 2955969, 6897261, 20691783]

約数ペア:

[(1, 20691783), (3, 6897261), (7, 2955969), (9, 2299087), (21, 985323), (53, 390411), (63, 328441), (159, 130137), (371, 55773), (477, 43379), (1113, 18591), (3339, 6197)]