20545405

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{1597}}^1$

素因数の和:1716

約数の個数: 16

約数和(自身を含む): 25772544

約数和(自身を除く): 5227139

約数列:

[1, 5, 31, 83, 155, 415, 1597, 2573, 7985, 12865, 49507, 132551, 247535, 662755, 4109081, 20545405]

約数ペア:

[(1, 20545405), (5, 4109081), (31, 662755), (83, 247535), (155, 132551), (415, 49507), (1597, 12865), (2573, 7985)]