21090898

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{2381}}^1$

素因数の和:2529

約数の個数: 16

約数和(自身を含む): 32700096

約数和(自身を除く): 11609198

約数列:

[1, 2, 43, 86, 103, 206, 2381, 4429, 4762, 8858, 102383, 204766, 245243, 490486, 10545449, 21090898]

約数ペア:

[(1, 21090898), (2, 10545449), (43, 490486), (86, 245243), (103, 204766), (206, 102383), (2381, 8858), (4429, 4762)]