20665118

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1\times {\mathrm{541}}^1$

素因数の和:883

約数の個数: 16

約数和(自身を含む): 31609440

約数和(自身を除く): 10944322

約数列:

[1, 2, 71, 142, 269, 538, 541, 1082, 19099, 38198, 38411, 76822, 145529, 291058, 10332559, 20665118]

約数ペア:

[(1, 20665118), (2, 10332559), (71, 291058), (142, 145529), (269, 76822), (538, 38411), (541, 38198), (1082, 19099)]