20974247

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{683}}^1$

素因数の和:838

約数の個数: 16

約数和(自身を含む): 24820992

約数和(自身を除く): 3846745

約数列:

[1, 7, 41, 107, 287, 683, 749, 4387, 4781, 28003, 30709, 73081, 196021, 511567, 2996321, 20974247]

約数ペア:

[(1, 20974247), (7, 2996321), (41, 511567), (107, 196021), (287, 73081), (683, 30709), (749, 28003), (4387, 4781)]