20666877

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{12781}}^1$

素因数の和:12809

約数の個数: 24

約数和(自身を含む): 34971552

約数和(自身を除く): 14304675

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 12781, 38343, 89467, 140591, 268401, 421773, 626269, 984137, 1878807, 2952411, 6888959, 20666877]

約数ペア:

[(1, 20666877), (3, 6888959), (7, 2952411), (11, 1878807), (21, 984137), (33, 626269), (49, 421773), (77, 268401), (147, 140591), (231, 89467), (539, 38343), (1617, 12781)]