28726173

素因数分解:

$3^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{2161}}^1$

素因数の和:2385

約数の個数: 24

約数和(自身を含む): 47667776

約数和(自身を除く): 18941603

約数列:

[1, 3, 7, 9, 21, 63, 211, 633, 1477, 1899, 2161, 4431, 6483, 13293, 15127, 19449, 45381, 136143, 455971, 1367913, 3191797, 4103739, 9575391, 28726173]

約数ペア:

[(1, 28726173), (3, 9575391), (7, 4103739), (9, 3191797), (21, 1367913), (63, 455971), (211, 136143), (633, 45381), (1477, 19449), (1899, 15127), (2161, 13293), (4431, 6483)]