21490149155

素因数分解:

$5^1\times {\mathrm{761}}^1\times {\mathrm{1901}}^1\times {\mathrm{2971}}^1$

素因数の和:5638

約数の個数: 16

約数和(自身を含む): 25844345568

約数和(自身を除く): 4354196413

約数列:

[1, 5, 761, 1901, 2971, 3805, 9505, 14855, 1446661, 2260931, 5647871, 7233305, 11304655, 28239355, 4298029831, 21490149155]

約数ペア:

[(1, 21490149155), (5, 4298029831), (761, 28239355), (1901, 11304655), (2971, 7233305), (3805, 5647871), (9505, 2260931), (14855, 1446661)]