21340492

素因数分解:

$2^2\times {\mathrm{101}}^2\times {\mathrm{523}}^1$

素因数の和:729

約数の個数: 18

約数和(自身を含む): 37791404

約数和(自身を除く): 16450912

約数列:

[1, 2, 4, 101, 202, 404, 523, 1046, 2092, 10201, 20402, 40804, 52823, 105646, 211292, 5335123, 10670246, 21340492]

約数ペア:

[(1, 21340492), (2, 10670246), (4, 5335123), (101, 211292), (202, 105646), (404, 52823), (523, 40804), (1046, 20402), (2092, 10201)]