21207741

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{179}}^1\times {\mathrm{541}}^1$

素因数の和:796

約数の個数: 16

約数和(自身を含む): 28877760

約数和(自身を除く): 7670019

約数列:

[1, 3, 73, 179, 219, 537, 541, 1623, 13067, 39201, 39493, 96839, 118479, 290517, 7069247, 21207741]

約数ペア:

[(1, 21207741), (3, 7069247), (73, 290517), (179, 118479), (219, 96839), (537, 39493), (541, 39201), (1623, 13067)]