21165265

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{347}}^1\times {\mathrm{1109}}^1$

素因数の和:1472

約数の個数: 16

約数和(自身を含む): 27812160

約数和(自身を除く): 6646895

約数列:

[1, 5, 11, 55, 347, 1109, 1735, 3817, 5545, 12199, 19085, 60995, 384823, 1924115, 4233053, 21165265]

約数ペア:

[(1, 21165265), (5, 4233053), (11, 1924115), (55, 384823), (347, 60995), (1109, 19085), (1735, 12199), (3817, 5545)]