21231815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{4651}}^1$

素因数の和:4750

約数の個数: 16

約数和(自身を含む): 28135296

約数和(自身を除く): 6903481

約数列:

[1, 5, 11, 55, 83, 415, 913, 4565, 4651, 23255, 51161, 255805, 386033, 1930165, 4246363, 21231815]

約数ペア:

[(1, 21231815), (5, 4246363), (11, 1930165), (55, 386033), (83, 255805), (415, 51161), (913, 23255), (4565, 4651)]