21017139

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{48991}}^1$

素因数の和:49018

約数の個数: 16

約数和(自身を含む): 32922624

約数和(自身を除く): 11905485

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 48991, 146973, 538901, 636883, 1616703, 1910649, 7005713, 21017139]

約数ペア:

[(1, 21017139), (3, 7005713), (11, 1910649), (13, 1616703), (33, 636883), (39, 538901), (143, 146973), (429, 48991)]