21506545

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{1787}}^1$

素因数の和:1904

約数の個数: 16

約数和(自身を含む): 27034560

約数和(自身を除く): 5528015

約数列:

[1, 5, 29, 83, 145, 415, 1787, 2407, 8935, 12035, 51823, 148321, 259115, 741605, 4301309, 21506545]

約数ペア:

[(1, 21506545), (5, 4301309), (29, 741605), (83, 259115), (145, 148321), (415, 51823), (1787, 12035), (2407, 8935)]