21505549

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{1049}}^1$

素因数の和:1164

約数の個数: 16

約数和(自身を含む): 24696000

約数和(自身を除く): 3190451

約数列:

[1, 13, 19, 83, 247, 1049, 1079, 1577, 13637, 19931, 20501, 87067, 259103, 1131871, 1654273, 21505549]

約数ペア:

[(1, 21505549), (13, 1654273), (19, 1131871), (83, 259103), (247, 87067), (1049, 20501), (1079, 19931), (1577, 13637)]