20757751

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1\times {\mathrm{281}}^1$

素因数の和:522

約数の個数: 16

約数和(自身を含む): 24337728

約数和(自身を除く): 3579977

約数列:

[1, 7, 61, 173, 281, 427, 1211, 1967, 10553, 17141, 48613, 73871, 119987, 340291, 2965393, 20757751]

約数ペア:

[(1, 20757751), (7, 2965393), (61, 340291), (173, 119987), (281, 73871), (427, 48613), (1211, 17141), (1967, 10553)]