28278185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{991}}^1$

素因数の和:1448

約数の個数: 16

約数和(自身を含む): 36664320

約数和(自身を除く): 8386135

約数列:

[1, 5, 13, 65, 439, 991, 2195, 4955, 5707, 12883, 28535, 64415, 435049, 2175245, 5655637, 28278185]

約数ペア:

[(1, 28278185), (5, 5655637), (13, 2175245), (65, 435049), (439, 64415), (991, 28535), (2195, 12883), (4955, 5707)]