21044090

素因数分解:

$2^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{7489}}^1$

素因数の和:7777

約数の個数: 16

約数和(自身を含む): 38019240

約数和(自身を除く): 16975150

約数列:

[1, 2, 5, 10, 281, 562, 1405, 2810, 7489, 14978, 37445, 74890, 2104409, 4208818, 10522045, 21044090]

約数ペア:

[(1, 21044090), (2, 10522045), (5, 4208818), (10, 2104409), (281, 74890), (562, 37445), (1405, 14978), (2810, 7489)]