21456398

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{347}}^1\times {\mathrm{719}}^1$

素因数の和:1111

約数の個数: 16

約数和(自身を含む): 33073920

約数和(自身を除く): 11617522

約数列:

[1, 2, 43, 86, 347, 694, 719, 1438, 14921, 29842, 30917, 61834, 249493, 498986, 10728199, 21456398]

約数ペア:

[(1, 21456398), (2, 10728199), (43, 498986), (86, 249493), (347, 61834), (694, 30917), (719, 29842), (1438, 14921)]