28691271

素因数分解:

$3^2\times 7^1\times {\mathrm{269}}^1\times {\mathrm{1693}}^1$

素因数の和:1975

約数の個数: 24

約数和(自身を含む): 47567520

約数和(自身を除く): 18876249

約数列:

[1, 3, 7, 9, 21, 63, 269, 807, 1693, 1883, 2421, 5079, 5649, 11851, 15237, 16947, 35553, 106659, 455417, 1366251, 3187919, 4098753, 9563757, 28691271]

約数ペア:

[(1, 28691271), (3, 9563757), (7, 4098753), (9, 3187919), (21, 1366251), (63, 455417), (269, 106659), (807, 35553), (1693, 16947), (1883, 15237), (2421, 11851), (5079, 5649)]