21316309

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{1931}}^1$

素因数の和:2040

約数の個数: 16

約数和(自身を含む): 25966080

約数和(自身を除く): 4649771

約数列:

[1, 7, 19, 83, 133, 581, 1577, 1931, 11039, 13517, 36689, 160273, 256823, 1121911, 3045187, 21316309]

約数ペア:

[(1, 21316309), (7, 3045187), (19, 1121911), (83, 256823), (133, 160273), (581, 36689), (1577, 13517), (1931, 11039)]