20720555

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{3613}}^1$

素因数の和:3686

約数の個数: 16

約数和(自身を含む): 26367744

約数和(自身を除く): 5647189

約数列:

[1, 5, 31, 37, 155, 185, 1147, 3613, 5735, 18065, 112003, 133681, 560015, 668405, 4144111, 20720555]

約数ペア:

[(1, 20720555), (5, 4144111), (31, 668405), (37, 560015), (155, 133681), (185, 112003), (1147, 18065), (3613, 5735)]