20281261

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{20261}}^1$

素因数の和:20292

約数の個数: 16

約数和(自身を含む): 27232128

約数和(自身を除く): 6950867

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 20261, 141827, 222871, 263393, 1560097, 1843751, 2897323, 20281261]

約数ペア:

[(1, 20281261), (7, 2897323), (11, 1843751), (13, 1560097), (77, 263393), (91, 222871), (143, 141827), (1001, 20261)]