20321105

素因数分解:

$5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{4177}}^1$

素因数の和:4328

約数の個数: 16

約数和(自身を含む): 28076160

約数和(自身を除く): 7755055

約数列:

[1, 5, 7, 35, 139, 695, 973, 4177, 4865, 20885, 29239, 146195, 580603, 2903015, 4064221, 20321105]

約数ペア:

[(1, 20321105), (5, 4064221), (7, 2903015), (35, 580603), (139, 146195), (695, 29239), (973, 20885), (4177, 4865)]