20439041

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{643}}^1$

素因数の和:908

約数の個数: 16

約数和(自身を含む): 24729600

約数和(自身を除く): 4290559

約数列:

[1, 7, 19, 133, 239, 643, 1673, 4501, 4541, 12217, 31787, 85519, 153677, 1075739, 2919863, 20439041]

約数ペア:

[(1, 20439041), (7, 2919863), (19, 1075739), (133, 153677), (239, 85519), (643, 31787), (1673, 12217), (4501, 4541)]