21006105

素因数分解:

$3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{6637}}^1$

素因数の和:6856

約数の個数: 16

約数和(自身を含む): 33774144

約数和(自身を除く): 12768039

約数列:

[1, 3, 5, 15, 211, 633, 1055, 3165, 6637, 19911, 33185, 99555, 1400407, 4201221, 7002035, 21006105]

約数ペア:

[(1, 21006105), (3, 7002035), (5, 4201221), (15, 1400407), (211, 99555), (633, 33185), (1055, 19911), (3165, 6637)]