21167905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{4637}}^1$

素因数の和:4736

約数の個数: 16

約数和(自身を含む): 28050624

約数和(自身を除く): 6882719

約数列:

[1, 5, 11, 55, 83, 415, 913, 4565, 4637, 23185, 51007, 255035, 384871, 1924355, 4233581, 21167905]

約数ペア:

[(1, 21167905), (5, 4233581), (11, 1924355), (55, 384871), (83, 255035), (415, 51007), (913, 23185), (4565, 4637)]