21115237

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{991}}^1$

素因数の和:1164

約数の個数: 16

約数和(自身を含む): 24998400

約数和(自身を除く): 3883163

約数列:

[1, 11, 13, 143, 149, 991, 1639, 1937, 10901, 12883, 21307, 141713, 147659, 1624249, 1919567, 21115237]

約数ペア:

[(1, 21115237), (11, 1919567), (13, 1624249), (143, 147659), (149, 141713), (991, 21307), (1639, 12883), (1937, 10901)]